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Friday, 05/02/2025 7:10 PM 
 RecordStarterOpenLatest
 Gm#W-LPitcherMLO/UMLO/URL
 MIN Minnesota92113-20RYAN(R)+1009o+05+1059o-10+1.5, -200
 BOS Boston92218-16BELLO(R)-1109u-25-1159u-10-1.5, +170

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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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 Minneapolis Twins
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Randy DobnakSP Undisclosed7-day IL05/02/20250000.00000000.000.000
Randy Dobnak (SP, Twins) on 7-day IL, status unknown. Next game: 05/02/2025 vs. Boston. Info updated 05/02/2025.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Matt CanterinoSP Shoulder7-day IL05/02/20250000.00000000.000.000
Matt Canterino (SP, Twins) on 7-day IL for shoulder issue; expected to return for game on 05/02/2025 at Boston.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Charlee SotoSP Triceps7-day IL05/02/20250000.00000000.000.000
Charlee Soto (SP, Twins) is on the 7-day IL with a tricep injury. Next game is 05/02/2025 against Boston. Info as of 05/02/2025.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Erasmo RamirezRP Shoulder60-day IL05/02/20250000.00000000.000.000
Erasmo Ramirez (RP, Twins) is on 60-day IL due to shoulder injury. Next game: 05/02/2025 at Boston. Info updated 05/02/2025.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
C.J. CulpepperSP Undisclosed7-day IL05/02/20250000.00000000.000.000
C.J. Culpepper (SP, Twins) is on the 7-day IL with an unknown injury; next game is 05/02/2025 at Boston.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Daniel DuarteRP Elbow60-day IL05/02/20250000.00000000.000.000
Daniel Duarte (RP, Twins) on 60-day IL due to elbow injury. Next game: 05/02/2025 vs. Boston. Info updated today.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Michael TonkinP Shoulder15-day IL05/02/20250000.00000000.000.000
Michael Tonkin (P, Twins) is on the 15-day IL with a right shoulder strain; return date TBD. Next game: 05/02/2025.
 Boston Red Sox
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Walker BuehlerP ShoulderQuestionable05/01/202541033.732161659294.281.218
Walker Buehler (P, Red Sox) is questionable for his next start on 05/02 due to shoulder soreness. Status unclear.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Chris MurphyP Elbow60-day IL05/02/20250000.00000000.000.000
Chris Murphy of the Red Sox is on the 60-day IL after UCL surgery, set to miss an undetermined length of time. Next game: 05/02/2025.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Kutter CrawfordP Knee15-day IL05/02/20250000.00000000.000.000
Kutter Crawford of the Boston Red Sox is on the 15-day IL with a knee injury and is expected to return in early May.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Jovani MoranRP Elbow60-day IL05/02/20250000.00000000.000.000
Jovani Moran (RP, Boston Red Sox) on 60-day IL due to elbow injury; next game scheduled for 05/02/2025 vs. Minnesota.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Noah SongSP ElbowOut05/02/20250000.00000000.000.000
Noah Song (SP, Red Sox) is out with an elbow injury and will miss the game on 05/02/2025 vs. Minnesota.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Richard FittsP Pectoral15-day IL05/02/202502017.0146625133.181.118
Richard Fitts of the Boston Red Sox is on the 15-day IL with a pectoral injury and has no estimated return date.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Luis PeralesP Elbow60-day IL05/02/20250000.00000000.000.000
Luis Perales of the Boston Red Sox is on the 60-day IL due to an elbow injury, with his next game set for 05/02/2025 vs. Minnesota.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Brennan BernardinoP PersonalProbable05/02/202511011.078312102.450.818
Brennan Bernardino is on the bereavement list, likely missing 6-7 games for personal reasons. Next game: 5/2/2025 vs. Minnesota.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Zach PenrodP Elbow60-day IL05/02/20250000.00000000.000.000
Zach Penrod (P, Red Sox) is on the 60-day IL with a left elbow UCL sprain and will be out indefinitely. Next game 05/02/2025.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Matthew DuffyP Elbow60-day IL05/02/20250000.00000000.000.000
Matthew Duffy of the Boston Red Sox is on the 60-day IL due to an elbow injury, next game on 05/02/2025 vs. Minnesota.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Patrick SandovalP Undisclosed60-day IL03/25/20250000.00000000.000.000
Patrick Sandoval, Red Sox pitcher, on 60-day IL due to elbow injury; return date uncertain. Next game: 05/02/2025.

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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 Minnesota 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
Jhoan Duran
R
 0 0 1.35 14 1 2 0 100.0% 13.3 7 2 2 0 7 1 0 15 0 0 1.050 0.146 0.255 0.146 0.400
Griffin Jax
R
 0 2 6.92 14 7 0 2 0.0% 13.0 17 11 10 2 3 0 0 23 0 0 1.538 0.298 0.333 0.491 0.825
Cole Sands
R
 2 1 3.86 13 3 0 2 0.0% 11.7 7 5 5 1 6 0 1 9 1 0 1.114 0.179 0.304 0.256 0.561
Daniel Coulombe
L
 0 0 0.00 14 2 1 0 100.0% 12.3 6 0 0 0 1 0 0 11 0 0 0.568 0.140 0.159 0.186 0.345
Louie Varland
R
 1 3 4.11 17 4 0 0 0.0% 15.3 15 8 7 3 4 0 0 20 0 0 1.239 0.259 0.306 0.466 0.772
Justin Topa
R
 1 2 2.25 12 1 0 2 0.0% 12.0 11 6 3 0 4 1 1 10 0 0 1.250 0.234 0.308 0.298 0.606
Jorge Alcala
R
 0 2 9.49 12 1 0 0 0.0% 12.3 17 13 13 2 8 0 1 12 1 0 2.027 0.333 0.433 0.549 0.982
Brock Stewart
R
 0 0 4.50 5 2 0 0 0.0% 4.0 2 2 2 1 3 0 0 6 1 0 1.250 0.143 0.294 0.357 0.651
Michael Tonkin
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
Scott Blewett
R
 0 0 1.88 7 0 0 0 0.0% 14.3 14 4 3 1 4 0 1 15 1 0 1.256 0.250 0.311 0.339 0.651
Eiberson Castellano
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
Pablo Lopez
R
 2 2 2.25 5 0 0 0 0.0% 28.0 24 10 7 2 4 0 0 26 0 1 1.000 0.222 0.250 0.315 0.565
Bailey Ober
R
 3 1 4.13 6 0 0 0 0.0% 32.7 37 15 15 5 7 0 1 25 1 0 1.347 0.280 0.321 0.455 0.776
Chris Paddack
R
 0 3 5.60 6 0 0 0 0.0% 27.3 27 19 17 6 14 0 0 22 1 0 1.500 0.257 0.345 0.438 0.783
Simeon Woods Richardson
R
 2 2 4.03 6 0 0 0 0.0% 29.0 31 13 13 5 11 0 2 30 0 0 1.448 0.274 0.349 0.460 0.809
David Festa
R
 0 0 1.38 3 0 0 0 0.0% 13.0 12 3 2 0 5 0 2 15 0 0 1.308 0.245 0.339 0.286 0.625
Zebby Matthews
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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 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 1.59 13 1 4 0 100.0% 11.3 7 2 2 1 4 0 0 17 1 0 0.971 0.171 0.244 0.268 0.513
Liam Hendriks
R
 0 0 3.60 5 0 0 0 0.0% 5.0 5 2 2 1 4 0 0 5 0 0 1.800 0.294 0.429 0.471 0.899
Justin Slaten
R
 0 2 5.56 13 0 3 1 75.0% 11.3 8 8 7 1 5 2 0 9 0 0 1.147 0.190 0.277 0.286 0.562
Garrett Whitlock
R
 1 0 3.06 11 3 0 1 0.0% 17.7 15 6 6 1 5 0 1 19 0 0 1.132 0.227 0.292 0.333 0.625
Justin Wilson
L
 1 0 4.00 12 2 0 3 0.0% 9.0 9 4 4 0 4 1 0 6 0 0 1.444 0.281 0.361 0.344 0.705
Gregory Weissert
R
 1 0 3.38 14 3 0 1 0.0% 13.3 13 5 5 1 3 0 1 18 0 0 1.200 0.245 0.298 0.302 0.600
Brennan Bernardino
L
 1 1 2.45 11 0 0 0 0.0% 11.0 7 8 3 1 2 1 2 10 0 0 0.818 0.175 0.250 0.275 0.525
Sean Newcomb
L
 0 3 4.24 6 0 0 0 0.0% 23.3 33 15 11 1 11 0 1 30 0 0 1.886 0.344 0.417 0.406 0.823
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
Luis Guerrero
R
 0 0 0.00 3 0 0 0 0.0% 4.0 1 0 0 0 0 0 0 3 0 0 0.250 0.077 0.077 0.077 0.154
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
Garrett Crochet
L
 3 2 2.05 7 0 0 0 0.0% 44.0 28 13 10 2 18 0 0 50 0 1 1.045 0.179 0.264 0.237 0.502
Tanner Houck
R
 0 2 6.38 7 0 0 0 0.0% 36.7 42 27 26 7 12 0 3 30 1 0 1.473 0.294 0.361 0.476 0.836
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
Lucas Giolito
R
 0 0 4.50 1 0 0 0 0.0% 6.0 5 3 3 2 2 0 0 7 0 0 1.167 0.217 0.280 0.478 0.758
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
Hunter Dobbins
R
 2 0 2.45 2 0 0 0 0.0% 11.0 11 4 3 1 2 0 1 11 0 0 1.182 0.250 0.298 0.409 0.707

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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 Minnesota 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%
Jhoan Duran
R
 1.35 1.23 1.44 2.43 2.58 2.43 2.25 0.0% 64.5% 13.0% 4.7 27.8% 10.1 2.14 1.65 85.7% 3.80 0 0 0.0%
Griffin Jax
R
 6.92 5.78 5.28 2.25 2.33 2.25 2.24 3.3% 71.8% 5.1% 2.1 39.0% 15.9 7.67 2.00 52.3% 1.40 0 0 0.0%
Cole Sands
R
 3.86 2.35 2.43 4.47 4.52 4.47 4.45 2.2% 64.2% 12.2% 4.6 18.4% 6.9 1.50 1.29 71.4% 1.83 14 7 50.0%
Daniel Coulombe
L
 0.00 -0.07 0.62 1.56 1.66 1.56 1.51 0.0% 67.8% 2.3% 0.7 25.0% 8.0 11.00 0.97 100.0% 1.50 9 2 22.2%
Louie Varland
R
 4.11 4.55 3.97 3.82 3.60 3.82 3.82 4.8% 68.8% 6.2% 2.3 30.8% 11.7 5.00 1.57 74.3% 2.17 2 2 100.0%
Justin Topa
R
 2.25 2.80 2.73 2.68 2.87 2.68 2.45 0.0% 64.8% 7.7% 3.0 19.2% 7.5 2.50 1.17 62.5% 2.50 6 3 50.0%
Jorge Alcala
R
 9.49 7.34 8.34 5.45 5.14 5.45 5.41 3.3% 63.5% 12.7% 5.8 19.0% 8.8 1.50 1.62 56.0% 1.00 2 0 0.0%
Brock Stewart
R
 4.50 3.75 3.48 5.60 5.42 5.60 5.50 5.9% 61.8% 17.6% 6.8 35.3% 13.5 2.00 2.25 83.3% 1.00 3 2 66.7%
Michael Tonkin
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%
Scott Blewett
R
 1.88 3.54 3.44 2.96 2.98 2.96 2.97 1.6% 62.7% 6.5% 2.5 24.2% 9.4 3.75 1.33 85.2% 1.75 3 0 0.0%
Eiberson Castellano
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%
Pablo Lopez
R
 2.25 2.61 2.02 2.60 2.64 2.60 2.61 1.8% 64.8% 3.6% 1.3 23.2% 8.4 6.50 1.07 71.4% 1.94 0 0 0.0%
Bailey Ober
R
 4.13 4.92 4.48 4.29 4.15 4.29 4.29 3.6% 68.6% 4.9% 1.9 17.5% 6.9 3.57 0.98 78.9% 0.93 0 0 0.0%
Chris Paddack
R
 5.60 5.48 5.09 5.88 5.63 5.88 5.88 5.0% 61.4% 11.4% 4.6 17.9% 7.2 1.57 1.32 67.5% 1.19 0 0 0.0%
Simeon Woods Richardson
R
 4.03 5.14 5.14 4.62 4.41 4.62 4.61 4.0% 62.9% 8.4% 3.4 22.9% 9.3 2.73 1.41 83.8% 0.67 0 0 0.0%
David Festa
R
 1.38 2.93 3.37 2.41 2.53 2.41 2.40 0.0% 64.3% 8.6% 3.5 25.9% 10.4 3.00 1.54 84.2% 0.89 0 0 0.0%
Zebby Matthews
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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 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
 1.59 1.99 1.77 2.31 2.34 2.31 2.27 2.2% 70.2% 8.9% 3.2 37.8% 13.5 4.25 1.85 93.7% 0.30 3 0 0.0%
Liam Hendriks
R
 3.60 6.08 7.10 6.10 6.20 6.10 6.12 4.8% 59.3% 16.7% 7.2 20.8% 9.0 1.25 1.80 92.1% 1.00 0 0 0.0%
Justin Slaten
R
 5.56 2.73 2.31 3.98 4.05 3.98 3.37 2.1% 65.1% 10.6% 4.0 19.1% 7.1 1.80 1.24 43.1% 0.63 0 0 0.0%
Garrett Whitlock
R
 3.06 2.78 2.67 2.70 2.74 2.70 2.71 1.4% 64.9% 6.8% 2.5 25.7% 9.7 3.80 1.36 76.5% 0.81 1 1 100.0%
Justin Wilson
L
 4.00 3.53 3.56 3.10 3.34 3.10 2.82 0.0% 66.4% 10.0% 4.0 15.0% 6.0 1.50 1.11 69.2% 6.50 8 4 50.0%
Gregory Weissert
R
 3.38 3.42 3.24 2.27 2.35 2.27 2.30 1.8% 65.0% 5.3% 2.0 31.6% 12.2 6.00 1.58 76.9% 2.60 7 1 14.3%
Brennan Bernardino
L
 2.45 1.73 1.72 3.55 3.56 3.55 3.32 2.3% 65.6% 4.5% 1.6 22.7% 8.2 5.00 1.09 31.3% 1.56 0 0 0.0%
Sean Newcomb
L
 4.24 6.04 6.61 2.63 2.78 2.63 2.62 0.9% 64.7% 9.6% 4.2 26.1% 11.6 2.73 1.76 68.8% 1.40 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%
Luis Guerrero
R
 0.00 -1.48 0.14 1.60 1.54 1.60 1.65 0.0% 76.7% 0.0% 0.0 23.1% 6.8 0.00 0.75 100.0% 1.00 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%
Garrett Crochet
L
 2.05 1.90 1.80 2.65 2.72 2.65 2.65 1.1% 64.8% 10.1% 3.7 28.1% 10.2 2.78 1.55 76.4% 1.82 0 0 0.0%
Tanner Houck
R
 6.38 5.58 5.70 5.17 4.97 5.17 5.18 4.4% 63.3% 7.2% 2.9 18.0% 7.4 2.50 1.15 63.6% 2.63 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%
Lucas Giolito
R
 4.50 5.16 4.24 6.10 5.72 6.10 6.06 8.0% 67.8% 8.0% 3.0 28.0% 10.5 3.50 1.50 95.2% 1.00 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%
Hunter Dobbins
R
 2.45 3.60 3.38 3.10 3.08 3.10 3.07 2.1% 68.6% 4.3% 1.6 23.4% 9.0 5.50 1.18 79.4% 5.50 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.