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Sunday, 05/11/2025 2:10 PM 
 RecordStarterOpenLatest
 Gm#W-LPitcherMLO/UMLO/URL
 BOS Boston96321-20GIOLITO(R)+1158.5o-25+1209ev+1.5, -175
 KC Kansas City96424-17LUGO(R)-1258.5u+05-1309u-20-1.5, +155

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Team Bullpen Breakdown

Explore comprehensive MLB bullpen rosters featuring standard and Sabermetric pitching stats, plus updated injury reports to evaluate each team's relief pitching depth.

Pitcher Injuries

Stay updated with each MLB team's key impact player injury details. Find statuses, injury types, and game effect for a competitive edge in baseball insights.

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 Boston Red Sox
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Hobie HarrisSP Shoulder7-day IL05/11/20250000.00000000.000.000
Hobie Harris (SP, Red Sox) on 7-day IL due to shoulder injury. Next game on 05/11/2025 vs. Kansas City.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Patrick SandovalElbow60-day IL05/11/20250000.00000000.000.000
Patrick Sandoval of the Red Sox is on the 60-day IL with an elbow injury and will be out indefinitely. Next game 05/11/2025.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Luis PeralesElbow60-day IL05/11/20250000.00000000.000.000
Luis Perales, Boston Red Sox, on 60-day IL due to an elbow injury; next game on 05/11/2025 at Kansas City.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Jovani MoranRP Elbow60-day IL05/11/20250000.00000000.000.000
Jovani Moran (RP) on 60-day IL with an elbow injury for the Boston Red Sox; next game 05/11/2025 at Kansas City.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Noah SongSP ElbowOut05/11/20250000.00000000.000.000
Noah Song of the Boston Red Sox is out with an elbow injury and will miss the game on 05/11/2025 against Kansas City.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Chris MurphyElbow60-day IL05/11/20250000.00000000.000.000
Chris Murphy of the Red Sox is on the 60-day IL due to left UCL surgery, with an indefinite recovery timeline. Next game: 05/11/2025.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Kutter CrawfordKnee15-day IL05/11/20250000.00000000.000.000
Kutter Crawford (P) of the Boston Red Sox is on the 15-day IL due to right patellar tendinopathy, out until early May.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Jojo IngrassiaSP Undisclosed7-day IL05/11/20250000.00000000.000.000
Jojo Ingrassia (SP) on 7-day IL for Boston Red Sox. Status unknown. Next game on 05/11/2025 at Kansas City.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Hayden MullinsSP Undisclosed7-day IL05/11/20250000.00000000.000.000
Hayden Mullins (SP, Red Sox) on 7-day IL, status unknown. Next game: 05/11/2025 at Kansas City. Info as of 05/11/2025.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Walker BuehlerShoulder15-day IL05/11/202541033.732161659294.281.218
Walker Buehler of the Red Sox is on the 15-day IL with right shoulder inflammation, and his return is uncertain.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Richard FittsPectoral15-day IL05/11/202502017.0146625133.181.118
Richard Fitts of the Boston Red Sox is on the 15-day IL with a pectoral injury, and there’s no set recovery timetable.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Matthew DuffyElbow60-day IL05/11/20250000.00000000.000.000
Matthew Duffy (P) of the Boston Red Sox is on the 60-day IL due to an elbow injury. Next game: 05/11/2025 at Kansas City.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Zach PenrodElbow60-day IL05/11/20250000.00000000.000.000
Zach Penrod (P, Red Sox) is on 60-day IL with a left elbow UCL sprain, out indefinitely. Next game: 05/11/2025.
 Kansas City Royals
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
L.P. LangevinSP Lat60-day IL05/11/20250000.00000000.000.000
L.P. Langevin on 60-Day IL with lat injury; next Royals game is on 05/11/2025 against Boston. Info updated today.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Alec MarshShoulder60-day IL05/11/20250000.00000000.000.000
Alec Marsh of the Kansas City Royals is on the 60-day IL with a shoulder injury, return date TBD. Next game: 05/11/2025 vs. Boston.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Kyle WrightShoulder15-day IL05/11/20250000.00000000.000.000
Kyle Wright (P, Royals) is on the 15-day IL following right shoulder surgery, with no set return date.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Anthony SimonelliSP Undisclosed7-day IL05/11/20250000.00000000.000.000
Anthony Simonelli (SP) on 7-day IL for Kansas City Royals; next game on 05/11/2025 vs. Boston. Injury status unknown.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Sam LongElbow15-day IL05/11/20250207.012121025612.862.429
Sam Long of the Kansas City Royals is on the 15-day IL with left elbow inflammation, no return timetable as of 05/11/2025.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Carlos MateoUndisclosed7-day IL05/11/20250000.00000000.000.000
Carlos Mateo (P) is on the 7-day IL for the Kansas City Royals with an unknown issue; next game is on 05/11/2025 vs. Boston.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
James McArthurElbow60-day IL05/11/20250000.00000000.000.000
James McArthur (P, Royals) is on the 60-day IL with a right elbow injury. No return timetable set. Next game: 05/11/2025.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Hunter HarveyShoulder15-day IL05/11/20250005.31000070.000.188
Hunter Harvey (P, Royals) is out indefinitely on the 15-day IL with a Grade 1 shoulder strain. Next game: 05/11/2025.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Asa LacySP Elbow7-day IL05/11/20250000.00000000.000.000
Asa Lacy (SP), Royals, on 7-day IL with elbow injury. Next game on 05/11/2025 vs. Boston. Info as of 05/11/2025.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Steven ZobacSP Knee7-day IL05/11/20250000.00000000.000.000
Steven Zobac of the Kansas City Royals is on the 7-day IL due to a knee injury. Next game is on 05/11/2025 vs. Boston.

Bullpen Pitching Stats

2025 Pitching Stats in All Games

This table displays pitching statistics for a team's bullpen, highlighting the expected available pitchers for today's game. Key stats such as ERA, WHIP, saves, and opponents' batting averages are included to help bettors and fantasy managers evaluate bullpen strength. Pitchers highlighted in white rows are projected to be available for relief appearances, while players shown in grey rows are currently unavailable or listed as starting pitchers. Favorable and unfavorable performance indicators are clearly marked in green and red, respectively, allowing for quick identification of bullpen advantages or vulnerabilities.

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 Boston Bullpen - 2025 All Games Pitching Statistics
Player
T
W L ERA G HLD SV BSV SV% IP H R ER HR BB IBB HBP SO WP BK WHIP AVGa OBPa SLGa OPSa
Aroldis Chapman
L
2 1 2.03 15 1 5 0 100.0% 13.3 8 3 3 2 5 0 0 20 1 0 0.975 0.167 0.245 0.313 0.558
Liam Hendriks
R
0 0 2.00 8 0 0 0 0.0% 9.0 7 2 2 1 4 0 1 7 0 0 1.222 0.226 0.333 0.323 0.656
Justin Slaten
R
1 3 5.40 16 0 3 1 75.0% 15.0 11 10 9 1 5 2 0 9 0 0 1.067 0.196 0.262 0.286 0.548
Garrett Whitlock
R
1 0 3.38 14 3 0 3 0.0% 21.3 19 9 8 1 8 0 1 26 2 0 1.266 0.235 0.311 0.321 0.632
Justin Wilson
L
1 0 3.00 15 2 0 3 0.0% 12.0 12 4 4 0 5 2 0 12 1 0 1.417 0.273 0.347 0.341 0.688
Gregory Weissert
R
1 0 2.65 17 4 0 1 0.0% 17.0 14 5 5 1 5 0 1 18 0 0 1.118 0.219 0.286 0.266 0.551
Brennan Bernardino
L
2 1 1.76 16 0 0 0 0.0% 15.3 10 8 3 1 2 1 2 15 0 0 0.783 0.179 0.233 0.250 0.483
Sean Newcomb
L
0 4 3.58 8 0 0 0 0.0% 27.7 38 16 11 1 12 0 1 33 1 0 1.807 0.336 0.405 0.389 0.794
Zach Penrod
L
0 0 0.00 0 0 0 0 0.0% 0.0 0 0 0 0 0 0 0 0 0 0 0.000 0.000 0.000 0.000 0.000
Chris Murphy
L
0 0 0.00 0 0 0 0 0.0% 0.0 0 0 0 0 0 0 0 0 0 0 0.000 0.000 0.000 0.000 0.000
Patrick Sandoval
L
0 0 0.00 0 0 0 0 0.0% 0.0 0 0 0 0 0 0 0 0 0 0 0.000 0.000 0.000 0.000 0.000
Hunter Dobbins
R
2 1 2.78 4 0 0 0 0.0% 22.7 23 8 7 2 4 0 2 19 0 0 1.191 0.256 0.302 0.411 0.713
Garrett Crochet
L
4 2 1.93 9 0 0 0 0.0% 56.0 39 15 12 3 21 0 0 65 0 2 1.071 0.192 0.268 0.256 0.524
Tanner Houck
R
0 2 6.10 8 0 0 0 0.0% 41.3 48 30 28 8 14 0 4 32 1 0 1.500 0.294 0.365 0.485 0.849
Walker Buehler
R
4 1 4.28 6 0 0 0 0.0% 33.7 32 16 16 5 9 0 2 29 0 0 1.218 0.252 0.312 0.409 0.721
Brayan Bello
R
2 0 2.01 4 0 0 0 0.0% 22.3 18 5 5 3 12 0 2 13 0 0 1.343 0.228 0.344 0.392 0.736
Richard Fitts
R
0 2 3.18 3 0 0 0 0.0% 17.0 14 6 6 2 5 0 0 13 1 0 1.118 0.226 0.284 0.339 0.622
Kutter Crawford
R
0 0 0.00 0 0 0 0 0.0% 0.0 0 0 0 0 0 0 0 0 0 0 0.000 0.000 0.000 0.000 0.000

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 Kansas City Bullpen - 2025 All Games Pitching Statistics
Player
T
W L ERA G HLD SV BSV SV% IP H R ER HR BB IBB HBP SO WP BK WHIP AVGa OBPa SLGa OPSa
Carlos Estevez
R
1 0 2.50 17 0 11 2 84.6% 18.0 12 6 5 0 9 3 2 16 1 1 1.167 0.185 0.303 0.231 0.533
Lucas Erceg
R
0 0 0.54 18 12 1 0 100.0% 16.7 8 1 1 0 1 0 1 13 0 0 0.540 0.145 0.175 0.145 0.321
Hunter Harvey
R
0 0 0.00 6 3 0 0 0.0% 5.3 1 0 0 0 0 0 0 7 0 0 0.188 0.059 0.059 0.059 0.118
John Schreiber
R
1 1 1.69 16 3 0 0 0.0% 16.0 12 3 3 3 5 0 0 16 0 0 1.063 0.218 0.283 0.400 0.683
Angel Zerpa
L
2 0 7.20 15 1 0 2 0.0% 15.0 25 12 12 4 5 0 1 12 0 0 2.000 0.373 0.425 0.642 1.066
Sam Long
L
0 2 12.86 7 0 0 0 0.0% 7.0 12 12 10 2 5 1 0 6 3 0 2.429 0.375 0.459 0.656 1.116
Daniel Lynch
L
3 0 0.96 16 2 1 0 100.0% 18.7 12 3 2 1 6 0 1 9 0 0 0.964 0.188 0.268 0.250 0.518
Chris Stratton
R
0 0 7.20 11 0 0 0 0.0% 15.0 25 14 12 2 7 0 0 15 0 0 2.133 0.362 0.421 0.551 0.972
Steven Cruz
R
1 0 0.00 12 3 0 0 0.0% 10.7 3 0 0 0 4 0 0 8 0 0 0.656 0.088 0.184 0.088 0.272
Taylor Clarke
R
1 0 0.00 4 0 0 0 0.0% 4.3 2 0 0 0 0 0 0 2 1 0 0.462 0.133 0.133 0.133 0.267
Jonathan Bowlan
R
0 0 0.00 1 0 0 0 0.0% 2.0 0 0 0 0 0 0 0 1 0 0 0.000 0.000 0.000 0.000 0.000
Cole Ragans
L
2 2 4.20 8 0 0 0 0.0% 40.7 37 20 19 4 13 0 1 65 2 0 1.230 0.240 0.304 0.390 0.693
Michael Wacha
R
2 4 2.98 8 0 0 0 0.0% 45.3 38 15 15 2 14 0 0 34 0 0 1.147 0.225 0.284 0.320 0.604
Kristofer Bubic
L
4 2 1.88 8 0 0 0 0.0% 48.0 40 11 10 2 14 1 2 47 1 0 1.125 0.225 0.289 0.315 0.603
Michael Lorenzen
R
3 3 3.57 8 0 0 0 0.0% 45.3 43 19 18 8 14 0 1 40 6 0 1.257 0.243 0.302 0.441 0.743
Noah Cameron
L
1 0 0.00 1 0 0 0 0.0% 6.3 1 0 0 0 5 0 0 3 0 0 0.947 0.050 0.240 0.050 0.290
Kyle Wright
R
0 0 0.00 0 0 0 0 0.0% 0.0 0 0 0 0 0 0 0 0 0 0 0.000 0.000 0.000 0.000 0.000

2025 Advanced Pitching Stats in All Games

This table provides advanced pitching and Sabermetric statistics for the team's bullpen pitchers, highlighting expected availability for today's game. Metrics include ERA and advanced ERA estimators (xERA, FIP, SIERA), strikeout and walk rates, and performance with inherited runners, helping bettors and fantasy managers assess bullpen effectiveness. Pitchers in white rows are projected available for relief, while those in grey rows are either unavailable or designated as starters. Favorable (green) and unfavorable (red) performances are clearly marked for quick reference.

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 Boston Bullpen - 2025 All Games Advanced Pitching Statistics
  ERA Estimates Percentages and Ratios Inherited Runners
Player
T
ERA xERA ERC FIP dERA DICE SIERA HR% Str% BB% BB9 SO% SO9 SOBB PFR LOB% GOFO IR IRA IRA%
Aroldis Chapman
L
2.03 2.47 2.01 3.18 3.09 3.18 3.14 3.8% 68.8% 9.4% 3.4 37.7% 13.5 4.00 1.88 98.0% 0.36 3 0 0.0%
Liam Hendriks
R
2.00 3.30 3.65 4.66 4.73 4.66 4.58 2.8% 62.4% 10.3% 4.0 17.9% 7.0 1.75 1.22 94.3% 0.38 0 0 0.0%
Justin Slaten
R
5.40 2.44 1.94 3.77 3.87 3.77 3.33 1.6% 66.2% 8.2% 3.0 14.8% 5.4 1.80 0.93 41.1% 0.83 4 0 0.0%
Garrett Whitlock
R
3.38 3.13 3.07 2.54 2.61 2.54 2.54 1.1% 63.9% 8.7% 3.4 28.3% 11.0 3.25 1.59 71.4% 0.74 1 1 100.0%
Justin Wilson
L
3.00 3.43 3.29 2.35 2.58 2.35 1.90 0.0% 67.5% 9.4% 3.8 22.6% 9.0 2.40 1.42 76.5% 5.00 9 4 44.4%
Gregory Weissert
R
2.65 2.70 2.61 2.81 2.83 2.81 2.82 1.4% 63.3% 7.0% 2.6 25.4% 9.5 3.60 1.35 80.6% 2.57 7 1 14.3%
Brennan Bernardino
L
1.76 1.46 1.50 2.77 2.84 2.77 2.59 1.7% 66.5% 3.3% 1.2 25.0% 8.8 7.50 1.11 47.6% 1.55 6 1 16.7%
Sean Newcomb
L
3.58 5.69 6.06 2.59 2.76 2.59 2.59 0.8% 64.0% 9.0% 3.9 24.6% 10.7 2.75 1.63 70.6% 1.67 0 0 0.0%
Zach Penrod
L
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.0% 0.0% 0.0% 0.0 0.0% 0.0 0.00 0.00 0.0% 0.00 0 0 0.0%
Chris Murphy
L
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.0% 0.0% 0.0% 0.0 0.0% 0.0 0.00 0.00 0.0% 0.00 0 0 0.0%
Patrick Sandoval
L
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.0% 0.0% 0.0% 0.0 0.0% 0.0 0.00 0.00 0.0% 0.00 0 0 0.0%
Hunter Dobbins
R
2.78 3.66 3.45 3.36 3.34 3.36 3.37 2.1% 67.2% 4.1% 1.6 19.6% 7.5 4.75 1.01 80.2% 2.27 0 0 0.0%
Garrett Crochet
L
1.93 2.19 1.96 2.60 2.67 2.60 2.60 1.3% 65.1% 9.2% 3.4 28.5% 10.4 3.10 1.54 80.6% 1.96 0 0 0.0%
Tanner Houck
R
6.10 5.72 5.86 5.37 5.14 5.37 5.38 4.4% 63.1% 7.4% 3.0 16.8% 7.0 2.29 1.11 65.7% 2.38 0 0 0.0%
Walker Buehler
R
4.28 4.06 3.81 4.29 4.17 4.29 4.29 3.6% 64.6% 6.3% 2.4 20.1% 7.8 3.22 1.13 75.0% 2.33 0 0 0.0%
Brayan Bello
R
2.01 3.90 4.12 5.56 5.69 5.56 5.58 3.2% 57.0% 12.1% 4.8 13.1% 5.2 1.08 1.12 97.1% 3.88 0 0 0.0%
Richard Fitts
R
3.18 3.22 2.73 3.98 3.94 3.98 3.99 3.0% 69.9% 7.1% 2.6 18.6% 6.9 2.60 1.06 80.2% 1.07 0 0 0.0%
Kutter Crawford
R
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.0% 0.0% 0.0% 0.0 0.0% 0.0 0.00 0.00 0.0% 0.00 0 0 0.0%

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 Kansas City Bullpen - 2025 All Games Advanced Pitching Statistics
  ERA Estimates Percentages and Ratios Inherited Runners
Player
T
ERA xERA ERC FIP dERA DICE SIERA HR% Str% BB% BB9 SO% SO9 SOBB PFR LOB% GOFO IR IRA IRA%
Carlos Estevez
R
2.50 1.92 2.00 3.16 3.33 3.16 2.63 0.0% 62.0% 11.7% 4.5 20.8% 8.0 1.78 1.39 73.9% 1.00 0 0 0.0%
Lucas Erceg
R
0.54 -0.14 0.70 1.90 1.89 1.90 1.89 0.0% 65.4% 1.7% 0.5 21.7% 7.0 13.00 0.84 90.0% 2.29 5 0 0.0%
Hunter Harvey
R
0.00 -1.86 0.08 0.47 0.37 0.47 0.50 0.0% 64.6% 0.0% 0.0 41.2% 11.8 0.00 1.31 100.0% 2.50 0 0 0.0%
John Schreiber
R
1.69 3.46 3.06 4.48 4.38 4.48 4.47 5.0% 65.8% 7.7% 2.8 24.6% 9.0 3.20 1.31 109.4% 2.33 11 3 27.3%
Angel Zerpa
L
7.20 8.94 9.77 6.17 5.63 6.17 6.22 5.5% 62.2% 6.6% 3.0 15.8% 7.2 2.40 1.13 74.8% 8.00 9 5 55.6%
Sam Long
L
12.86 10.30 11.57 7.24 6.54 7.24 6.85 5.4% 59.7% 13.2% 6.4 15.8% 7.7 1.20 1.57 35.2% 1.40 6 3 50.0%
Daniel Lynch
L
0.96 1.84 1.86 3.96 4.19 3.96 3.96 1.4% 66.0% 8.0% 2.9 12.0% 4.3 1.50 0.80 90.9% 1.62 1 0 0.0%
Chris Stratton
R
7.20 8.13 8.45 4.23 3.99 4.23 4.24 2.6% 61.0% 9.1% 4.2 19.5% 9.0 2.14 1.47 61.6% 2.00 0 0 0.0%
Steven Cruz
R
0.00 -0.38 0.61 2.72 2.81 2.72 2.71 0.0% 67.2% 10.3% 3.4 20.5% 6.8 2.00 1.13 100.0% 4.00 5 1 20.0%
Taylor Clarke
R
0.00 -0.36 0.46 2.18 2.27 2.18 2.19 0.0% 63.9% 0.0% 0.0 13.3% 4.2 0.00 0.46 100.0% 3.00 2 0 0.0%
Jonathan Bowlan
R
0.00 -2.76 0.00 2.10 2.01 2.10 2.23 0.0% 65.0% 0.0% 0.0 16.7% 4.5 0.00 0.50 0.0% 3.00 0 0 0.0%
Cole Ragans
L
4.20 3.49 3.25 2.21 2.29 2.21 2.22 2.4% 65.9% 7.5% 2.9 37.6% 14.4 5.00 1.92 68.3% 1.69 0 0 0.0%
Michael Wacha
R
2.98 2.71 2.45 3.10 3.18 3.10 3.10 1.1% 65.1% 7.4% 2.8 18.1% 6.8 2.43 1.06 75.2% 2.04 0 0 0.0%
Kristofer Bubic
L
1.88 2.60 2.58 2.68 2.79 2.68 2.62 1.0% 68.0% 7.0% 2.6 23.5% 8.8 3.36 1.27 84.6% 2.50 0 0 0.0%
Michael Lorenzen
R
3.57 4.39 3.90 4.62 4.45 4.62 4.62 4.2% 63.8% 7.2% 2.8 20.6% 7.9 2.86 1.19 83.3% 1.37 0 0 0.0%
Noah Cameron
L
0.00 0.05 0.89 4.52 5.04 4.52 4.49 0.0% 58.2% 20.0% 7.1 12.0% 4.3 0.60 1.26 100.0% 1.75 0 0 0.0%
Kyle Wright
R
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.0% 0.0% 0.0% 0.0 0.0% 0.0 0.00 0.00 0.0% 0.00 0 0 0.0%
Glossary of Terms

Player: The name of the bullpen pitcher.

T: The throwing hand of the pitcher (L for left-handed, R for right-handed).

W: The total number of wins credited to the pitcher.

L: The total number of losses credited to the pitcher.

ERA (Earned Run Average): The average number of earned runs allowed per nine innings pitched.

G (Games Played): The number of games in which the pitcher has appeared.

HLD (Holds): The number of times a relief pitcher maintains a lead before passing the game to another reliever.

SV (Saves): The number of times a pitcher successfully finishes a game with a lead.

BSV (Blown Saves): The number of times a pitcher enters in a save situation and fails to maintain the lead.

SV% (Save Percentage): The percentage of save opportunities successfully converted.

IP (Innings Pitched): The total number of innings pitched by the player.

H (Hits Allowed): The total number of hits allowed by the pitcher.

R (Runs Allowed): The total number of runs allowed, including earned and unearned runs.

ER (Earned Runs): The total number of runs scored against the pitcher that were not the result of defensive errors.

HR (Home Runs Allowed): The total number of home runs given up by the pitcher.

BB (Walks): The total number of batters walked by the pitcher.

IBB (Intentional Walks): The number of walks that were intentionally issued.

HBP (Hit by Pitch): The number of batters hit by a pitch.

SO (Strikeouts): The number of batters struck out by the pitcher.

WP (Wild Pitches): The number of pitches that the catcher fails to catch, allowing runners to advance.

BK (Balks): The number of illegal pitching movements that allow runners to advance.

WHIP (Walks + Hits per Inning Pitched): The average number of walks and hits allowed per inning pitched.

AVGa (Opponent Batting Average): The batting average of opposing hitters against the pitcher.

OBPa (Opponent On-Base Percentage): The on-base percentage of opposing hitters against the pitcher.

SLGa (Opponent Slugging Percentage): The slugging percentage of opposing hitters against the pitcher.

OPSa (Opponent On-Base Plus Slugging): The on-base plus slugging percentage of opposing hitters against the pitcher.

ERA (Earned Run Average): The average number of earned runs a pitcher allows per nine innings.

xERA (Expected ERA): A predictive measure of ERA based on batted-ball data, strikeouts, and walks.

ERC (Component ERA): An estimate of ERA based on hits, walks, and home runs allowed.

FIP (Fielding Independent Pitching): A metric that evaluates a pitcher's effectiveness independent of fielding by focusing on strikeouts, walks, and home runs allowed.

dERA (Defense-Independent ERA): An alternative ERA metric that removes the effect of defense and focuses on pitching outcomes.

DICE (Defense-Independent Component ERA): A similar stat to FIP that adjusts for defense-independent outcomes.

SIERA (Skill-Interactive ERA): A sabermetric pitching stat that evaluates a pitcher's overall skill by considering how batted balls are put in play.

Pitching Ratios & Percentages

Str% (Strike Percentage): The percentage of total pitches thrown for strikes.

BB% (Walk Percentage): The percentage of batters faced who are walked.

BB9 (Walks per 9 Innings): The average number of walks allowed per nine innings.

SO% (Strikeout Percentage): The percentage of batters faced who are struck out.

SO9 (Strikeouts per 9 Innings): The average number of strikeouts per nine innings.

SO/BB (Strikeout-to-Walk Ratio): The ratio of strikeouts to walks, indicating control and command.

PFR (Power-Finesse Ratio): A measure of a pitcher’s ability to generate strikeouts while limiting walks.

LOB% (Left on Base Percentage): The percentage of baserunners left stranded by a pitcher.

GO/FO (Ground Out to Fly Out Ratio): A measure of a pitcher's tendency to induce ground balls compared to fly balls.

Pitching Performance Indicators

Dom (Dominant Starts): The number of starts classified as dominant based on low runs allowed and high strikeout rates.

Dom% (Dominant Start Percentage): The percentage of total starts that were dominant performances.

Dis (Disaster Starts): The number of starts where the pitcher performed poorly, allowing a high number of runs.

Dis% (Disaster Start Percentage): The percentage of total starts that were considered disasters.

Inherited Runners

IR (Inherited Runners): The number of runners already on base when the pitcher enters the game.

IRA (Inherited Runners Allowed): The number of inherited runners that the pitcher allows to score.

IRA% (Inherited Runner Scoring Percentage): The percentage of inherited runners that end up scoring.