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Wednesday, 05/14/2025 7:15 PM 
 RecordStarterOpenLatest
 Gm#W-LPitcherMLO/UMLO/URL
 WAS Washington90717-26PARKER(L)+1508.5o-15+1459o-15+1.5, -150
 ATL Atlanta90821-21ELDER(R)-1608.5u-05-1559u-05-1.5, +130

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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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 Washington Nationals
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Derek LawForearm15-day IL05/14/20250000.00000000.000.000
Derek Law of the Nationals is on the 15-day IL due to right forearm inflammation and will be out indefinitely.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
DJ HerzElbow60-day IL05/14/20250000.00000000.000.000
DJ Herz of the Washington Nationals moved to the 60-day IL for Tommy John surgery on his elbow; return date uncertain.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Joan AdonSP Undisclosed7-day IL05/14/20250000.00000000.000.000
Joan Adon of the Washington Nationals is on the 7-day IL; status unknown. Next game: 05/14/2025 at Atlanta.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Jake BennettSP Elbow7-day IL05/14/20250000.00000000.000.000
Jake Bennett (SP, Nationals) on 7-day IL due to elbow injury; next game on 05/14/2025 at Atlanta. Updated info as of 05/14/2025.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Tyler StuartSP Elbow7-day IL05/14/20250000.00000000.000.000
Tyler Stuart (SP, Nationals) on 7-day IL with elbow injury; next game on 05/14/2025 against Atlanta. Info as of 05/14/2025.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Shinnosuke OgasawaraOblique7-day IL05/14/20250000.00000000.000.000
Shinnosuke Ogasawara (P, Nationals) is on the 7-day IL due to an oblique injury. Next game: 05/14/2025 at Atlanta.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Mason ThompsonElbow60-day IL05/14/20250000.00000000.000.000
Mason Thompson (P, Nationals) is on the 60-day IL due to elbow surgery, with no return timetable. Out indefinitely.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Orlando RibaltaBiceps15-day IL05/14/20250007.75552465.871.174
Orlando Ribalta is on the 15-day IL with a right bicep strain and will miss an extended period. Next game: 5/14/2025.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Lucas KnowlesSP Undisclosed60-day IL05/14/20250000.00000000.000.000
Lucas Knowles (SP, Nationals) on 60-day IL; return date and health status unclear. Next game 05/14/2025 vs Atlanta.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Josiah GrayElbow60-day IL05/14/20250000.00000000.000.000
Josiah Gray (P, Nationals) is on the 60-day IL for right elbow surgery; return timeline is unclear. Next game: 05/14/2025.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Jarlin SusanaSP Elbow7-day IL05/14/20250000.00000000.000.000
Jarlin Susana of the Washington Nationals is on the 7-day IL due to an elbow injury. Next game is on 05/14/2025 at Atlanta.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Travis SykoraSP Hip7-day IL05/14/20250000.00000000.000.000
Travis Sykora (SP, Nationals) is on the 7-day IL due to a hip injury. Next game is 05/14/2025 at Atlanta. Info updated.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Daison AcostaSP Undisclosed7-day IL05/14/20250000.00000000.000.000
Daison Acosta (SP, Nationals) on 7-day IL; status unknown. Next game: 05/14/2025 at Atlanta. Info last updated 05/14/2025.
 Atlanta Braves
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Darius VinesSP Undisclosed60-day IL05/14/20250000.00000000.000.000
Darius Vines (SP, Braves) on 60-day IL; status unknown. Next game: 05/14/2025 vs. Washington. Info as of 05/14/2025.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Amos WillinghamUndisclosed7-day IL05/14/20250000.00000000.000.000
Amos Willingham of the Atlanta Braves is on the 7-day IL with an unknown injury; next game is 05/14/2025 vs. Washington.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Cade KuehlerSP Elbow60-day IL05/14/20250000.00000000.000.000
Cade Kuehler (SP, Braves) on 60-day IL with an elbow injury. Next game: 05/14/2025 vs. Washington. Info updated 05/14/2025.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Raymond KerrRP Elbow60-day IL05/14/20250000.00000000.000.000
Raymond Kerr of the Atlanta Braves is on the 60-day IL due to an elbow injury; next game is on 05/14/2025 vs. Washington.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Royber SalinasSP Shoulder60-day IL05/14/20250000.00000000.000.000
Royber Salinas (SP) on 60-day IL due to shoulder injury. Next game for Atlanta Braves: 05/14/2025 vs. Washington.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Carter HoltonSP Elbow60-day IL05/14/20250000.00000000.000.000
Carter Holton (SP, Braves) is on the 60-day IL due to an elbow injury. Next game: 05/14/2025 vs. Washington.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Joe JimenezKnee60-day IL05/14/20250000.00000000.000.000
Joe Jimenez of the Braves is on the 60-day IL due to knee surgery and will miss a significant portion of the season.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Spencer StriderHamstring15-day IL05/14/20250105.05221153.601.200
Spencer Strider of the Braves is on the 15-day IL with a Grade 1 right hamstring strain; return timeline unclear.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Owen MurphySP Elbow60-day IL05/14/20250000.00000000.000.000
Owen Murphy (SP, Braves) on 60-day IL due to elbow injury; next game scheduled for 05/14/2025 vs. Washington.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Reynaldo LopezShoulder60-day IL05/14/20250005.09331215.402.200
Reynaldo Lopez, Atlanta Braves pitcher, has undergone shoulder surgery and is on the 60-day IL, out indefinitely.

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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 Washington 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
Kyle Finnegan
R
0 1 3.07 15 0 12 2 85.7% 14.7 14 5 5 0 7 0 0 15 4 0 1.432 0.255 0.339 0.418 0.757
Jose A. Ferrer
L
0 2 7.40 21 9 0 0 0.0% 20.7 28 19 17 1 8 0 3 21 2 0 1.742 0.329 0.406 0.435 0.842
Jorge Lopez
R
5 0 7.50 19 3 0 2 0.0% 18.0 18 15 15 1 6 0 3 12 2 0 1.333 0.265 0.351 0.382 0.733
Andrew Chafin
L
0 0 2.25 6 2 0 0 0.0% 4.0 4 2 1 0 4 0 0 5 3 0 2.000 0.267 0.421 0.267 0.688
Brad Lord
R
1 5 5.17 11 0 0 0 0.0% 31.3 38 19 18 3 13 0 2 27 0 0 1.628 0.306 0.381 0.435 0.817
Orlando Ribalta
R
0 0 5.87 4 1 0 0 0.0% 7.7 5 5 5 2 4 0 0 6 0 0 1.174 0.172 0.273 0.379 0.652
Jackson Rutledge
R
0 1 3.12 12 1 0 0 0.0% 17.3 14 7 6 1 7 0 2 23 3 0 1.212 0.222 0.319 0.302 0.621
Cole Henry
R
0 0 3.38 10 0 0 0 0.0% 13.3 10 5 5 1 5 1 4 15 0 0 1.125 0.200 0.322 0.320 0.642
Zach Brzykcy
R
0 0 3.00 4 0 0 0 0.0% 3.0 2 1 1 1 2 0 0 2 0 0 1.333 0.200 0.333 0.600 0.933
MacKenzie Gore
L
2 4 3.59 9 0 0 0 0.0% 52.7 45 21 21 8 16 0 1 75 2 0 1.158 0.233 0.295 0.399 0.694
Jake Irvin
R
2 1 4.00 9 0 0 0 0.0% 54.0 48 24 24 10 16 0 1 34 1 0 1.185 0.233 0.291 0.422 0.714
Mike Soroka
R
0 2 6.43 3 0 0 0 0.0% 14.0 14 10 10 2 4 0 1 15 0 0 1.286 0.259 0.322 0.444 0.766
Trevor Williams
R
2 4 5.88 8 0 0 0 0.0% 41.3 53 27 27 5 12 0 1 34 1 0 1.573 0.314 0.363 0.462 0.824
DJ Herz
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
Josiah Gray
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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 Atlanta 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
Raisel Iglesias
R
3 3 6.06 17 0 6 3 66.7% 16.3 19 12 11 6 4 1 0 19 0 0 1.408 0.279 0.319 0.618 0.937
Pierce Johnson
R
1 0 2.30 17 4 1 0 100.0% 15.7 10 4 4 0 4 0 0 18 1 0 0.894 0.182 0.237 0.236 0.474
Dylan Lee
L
1 1 2.04 19 7 1 3 25.0% 17.7 9 4 4 3 6 1 0 19 1 2 0.849 0.153 0.231 0.322 0.553
Aaron Bummer
L
0 1 3.18 14 0 0 0 0.0% 17.0 13 7 6 0 7 3 1 20 1 0 1.176 0.213 0.304 0.328 0.632
Daysbel Hernandez
R
3 0 1.89 18 6 0 1 0.0% 19.0 10 4 4 0 11 1 1 13 1 0 1.105 0.161 0.297 0.210 0.507
Enyel De Los Santos
R
1 1 3.32 17 0 0 0 0.0% 19.0 12 7 7 2 6 1 1 22 2 0 0.947 0.174 0.250 0.290 0.540
Rafael Montero
R
0 0 4.73 15 3 0 0 0.0% 13.3 10 7 7 0 13 1 0 14 0 0 1.725 0.204 0.371 0.245 0.616
Joe Jimenez
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
2 0 2.79 10 0 0 0 0.0% 19.3 16 7 6 2 6 0 1 19 1 0 1.138 0.229 0.299 0.343 0.642
Ian Anderson
R
0 1 11.57 7 1 0 1 0.0% 9.3 17 13 12 2 7 1 0 8 2 0 2.571 0.386 0.471 0.568 1.039
Davis Daniel
R
0 0 0.00 1 0 0 0 0.0% 1.0 0 0 0 0 0 0 1 1 0 0 0.000 0.000 0.250 0.000 0.250
Anderson Pilar
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
Chris Sale
L
1 3 3.97 9 0 0 0 0.0% 47.7 54 23 21 5 13 0 5 64 2 0 1.406 0.281 0.343 0.432 0.775
Reynaldo Lopez
R
0 0 5.40 1 0 0 0 0.0% 5.0 9 3 3 1 2 0 0 1 0 0 2.200 0.391 0.440 0.565 1.005
Spencer Schwellenbach
R
2 3 3.48 9 0 0 0 0.0% 54.3 48 23 21 6 11 1 2 46 1 0 1.086 0.233 0.279 0.388 0.667
Grant Holmes
R
2 3 4.14 9 0 0 0 0.0% 45.7 33 21 21 9 21 0 1 44 2 0 1.182 0.204 0.299 0.395 0.694
Spencer Strider
R
0 1 3.60 1 0 0 0 0.0% 5.0 5 2 2 1 1 0 1 5 0 0 1.200 0.263 0.333 0.526 0.860
AJ Smith-Shawver
R
2 2 2.76 6 0 0 0 0.0% 32.7 29 10 10 3 15 0 0 34 2 0 1.347 0.238 0.321 0.352 0.674

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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 Washington 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%
Kyle Finnegan
R
3.07 3.34 3.26 2.49 2.66 2.49 2.48 0.0% 62.6% 10.8% 4.3 23.1% 9.2 2.14 1.50 76.2% 1.63 8 5 62.5%
Jose A. Ferrer
L
7.40 5.59 6.12 3.29 3.35 3.29 3.32 1.0% 66.4% 7.9% 3.5 20.8% 9.1 2.63 1.40 53.2% 3.25 11 4 36.4%
Jorge Lopez
R
7.50 3.72 4.02 3.99 4.01 3.99 3.98 1.3% 68.7% 7.4% 3.0 14.8% 6.0 2.00 1.00 46.9% 2.86 13 5 38.5%
Andrew Chafin
L
2.25 4.87 5.17 3.60 3.70 3.60 3.61 0.0% 60.5% 20.0% 9.0 25.0% 11.3 1.25 2.25 75.0% 4.00 10 4 40.0%
Brad Lord
R
5.17 5.34 5.63 4.06 3.99 4.06 4.05 2.2% 64.5% 8.8% 3.7 18.4% 7.8 2.08 1.28 69.7% 2.42 2 0 0.0%
Orlando Ribalta
R
5.87 4.12 3.40 6.49 6.35 6.49 6.49 6.1% 63.4% 12.5% 4.7 18.8% 7.0 1.50 1.30 64.5% 2.25 3 0 0.0%
Jackson Rutledge
R
3.12 2.86 3.05 2.75 2.77 2.75 2.76 1.4% 63.6% 9.3% 3.6 30.7% 11.9 3.29 1.73 74.1% 1.00 4 2 50.0%
Cole Henry
R
3.38 2.65 3.37 3.85 3.81 3.85 3.59 1.7% 60.7% 8.5% 3.4 25.4% 10.1 3.00 1.50 79.5% 1.29 4 1 25.0%
Zach Brzykcy
R
3.00 5.18 5.07 8.10 8.71 8.10 7.97 8.3% 62.5% 15.4% 6.0 15.4% 6.0 1.00 1.33 115.4% 1.00 4 0 0.0%
MacKenzie Gore
L
3.59 3.63 3.31 3.19 3.10 3.19 3.19 3.8% 63.5% 7.3% 2.7 34.1% 12.8 4.69 1.73 80.7% 1.04 0 0 0.0%
Jake Irvin
R
4.00 4.15 3.62 5.19 5.11 5.19 5.19 4.5% 66.5% 7.0% 2.7 15.0% 5.7 2.13 0.93 80.4% 1.16 0 0 0.0%
Mike Soroka
R
6.43 4.30 4.18 3.89 3.75 3.89 3.88 3.4% 67.4% 6.6% 2.6 24.6% 9.6 3.75 1.36 55.6% 2.60 0 0 0.0%
Trevor Williams
R
5.88 5.61 5.43 3.97 3.86 3.97 3.97 2.7% 61.9% 6.3% 2.6 17.9% 7.4 2.83 1.11 66.1% 1.36 0 0 0.0%
DJ Herz
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%
Josiah Gray
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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 Atlanta 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%
Raisel Iglesias
R
6.06 6.93 6.05 6.28 5.68 6.28 6.08 8.3% 69.0% 5.6% 2.2 26.4% 10.5 4.75 1.41 75.3% 1.86 2 2 100.0%
Pierce Johnson
R
2.30 1.13 1.31 1.57 1.69 1.57 1.54 0.0% 66.8% 6.6% 2.3 29.5% 10.3 4.50 1.40 71.4% 0.90 12 4 33.3%
Dylan Lee
L
2.04 2.12 1.78 4.18 4.17 4.18 4.03 4.6% 65.7% 8.8% 3.1 27.9% 9.7 3.17 1.42 101.9% 1.42 11 2 18.2%
Aaron Bummer
L
3.18 2.18 2.03 2.16 2.38 2.16 1.66 0.0% 65.4% 9.7% 3.7 27.8% 10.6 2.86 1.59 66.7% 2.11 8 5 62.5%
Daysbel Hernandez
R
1.89 1.41 1.83 3.63 3.87 3.63 3.47 0.0% 59.0% 13.9% 5.2 16.5% 6.2 1.18 1.26 81.8% 1.64 10 2 20.0%
Enyel De Los Santos
R
3.32 2.14 1.92 3.26 3.21 3.26 3.10 2.6% 67.1% 7.9% 2.8 28.9% 10.4 3.67 1.47 74.1% 1.60 9 3 33.3%
Rafael Montero
R
4.73 3.53 3.92 3.93 4.09 3.93 3.69 0.0% 58.1% 20.6% 8.8 22.2% 9.5 1.08 2.03 69.6% 1.57 4 0 0.0%
Joe Jimenez
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
2.79 3.14 2.97 3.57 3.52 3.57 3.58 2.6% 63.4% 7.4% 2.8 23.5% 8.8 3.17 1.29 79.2% 1.91 3 0 0.0%
Ian Anderson
R
11.57 10.34 11.80 6.42 5.76 6.42 6.09 3.9% 59.1% 13.5% 6.8 15.4% 7.7 1.14 1.61 51.9% 1.80 0 0 0.0%
Davis Daniel
R
0.00 -2.80 0.80 4.10 4.13 4.10 4.61 0.0% 72.2% 0.0% 0.0 25.0% 9.0 0.00 1.00 100.0% 1.00 0 0 0.0%
Anderson Pilar
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%
Chris Sale
L
3.97 4.61 4.64 2.91 2.91 2.91 2.91 2.4% 67.1% 6.0% 2.5 29.8% 12.1 4.92 1.62 75.4% 1.17 0 0 0.0%
Reynaldo Lopez
R
5.40 9.29 10.09 6.50 6.11 6.50 6.58 4.0% 61.7% 7.7% 3.6 3.8% 1.8 0.50 0.60 83.3% 1.40 0 0 0.0%
Spencer Schwellenbach
R
3.48 3.23 2.87 3.56 3.52 3.56 3.51 2.7% 67.3% 4.9% 1.8 20.5% 7.6 4.18 1.05 72.2% 3.78 0 0 0.0%
Grant Holmes
R
4.14 3.77 3.48 5.18 5.09 5.18 5.19 4.9% 62.0% 10.9% 4.1 22.9% 8.7 2.10 1.42 80.2% 1.88 0 0 0.0%
Spencer Strider
R
3.60 4.57 4.83 4.90 4.67 4.90 4.71 4.8% 59.8% 4.5% 1.8 22.7% 9.0 5.00 1.20 89.3% 0.25 0 0 0.0%
AJ Smith-Shawver
R
2.76 3.72 3.56 3.59 3.56 3.59 3.58 2.2% 62.0% 10.6% 4.1 23.9% 9.4 2.27 1.50 85.4% 1.05 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.