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Thursday, 04/17/2025 2:10 PM 
 RecordStarterOpenLatest
 Gm#W-LPitcherMLO/UMLO/URL
 OAK Athletics9599-11SEARS(L)-1458.5o-10-1258ev-1.5, +120
 CHW Chi White Sox9604-15MARTIN(R)+1358.5u-10+1158u-20+1.5, -140

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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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 Athletics
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Ken WaldichukSP Elbow60-day IL04/17/20250000.00000000.000.000
Ken Waldichuk (SP, Athletics) is on the 60-day IL recovering from elbow surgery and won't return until late June.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Michael KellySP SuspensionSuspended04/17/20250000.00000000.000.000
Michael Kelly (SP) of the Athletics is suspended, with his next game scheduled for 04/17/2025 against the Chi White Sox.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Dylan FloroRP Undisclosed7-day IL04/17/20250000.00000000.000.000
Dylan Floro (RP, Athletics) is on the 7-day IL. Return date unknown. Next game: 04/17/2025 vs. Chi White Sox. Updated info as of 04/17/2025.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Luis MedinaSP Elbow60-day IL04/17/20250000.00000000.000.000
Luis Medina (SP) is on the 60-day IL due to an elbow injury. Next game: 04/17/2025 vs. Chi White Sox. Updated 04/17/2025.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Brady BassoSP Shoulder60-day IL04/17/20250000.00000000.000.000
Brady Basso (SP, Athletics) is on the 60-day IL with a left shoulder strain and will miss an extended period. Next game: 04/17/2025.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Domingo RoblesRP Undisclosed60-day IL04/17/20250000.00000000.000.000
Domingo Robles (RP, Athletics) is on the 60-day IL; status unknown. Next game is 04/17/2025 vs. Chi White Sox.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Michel OtanezRP Shoulder15-day IL04/17/20250000.00000000.000.000
Michel Otanez (RP) is on the 15-day IL due to a right shoulder impingement, with no set recovery timeline. Next game: 04/17/25.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Christian PelhamP Undisclosed7-day IL04/17/20250000.00000000.000.000
Christian Pelham is on the 7-day IL; next game is 04/17/2025 against the Chi White Sox. Info updated 04/17/2025.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Cole MillerSP Elbow60-day IL04/17/20250000.00000000.000.000
Cole Miller (SP, Athletics) on 60-day IL due to elbow injury. Next game: 04/17/2025 vs. Chi White Sox. Info updated 04/17/2025.
 Chicago White Sox
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Jesse ScholtensSP Elbow60-day IL04/17/20250000.00000000.000.000
Jesse Scholtens (SP) on 60-day IL due to elbow injury post-Tommy John surgery; return date unknown. Next game 04/17/2025.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Kohl SimasP Undisclosed60-day IL04/17/20250000.00000000.000.000
Kohl Simas is on the 60-day IL with an unknown injury. He is set to return for the White Sox game against the Athletics.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Yohemy NolascoP Undisclosed60-day IL04/17/20250000.00000000.000.000
Yohemy Nolasco (P, White Sox) is on the 60-day IL, status unknown, next game on 04/17/2025 against the Athletics.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Ky BushSP Elbow60-day IL04/17/20250000.00000000.000.000
Ky Bush (SP, Chi White Sox) on 60-day IL post-Tommy John surgery, expected to be out for the season. Next game: 04/17/2025.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Aldrin BatistaSP Undisclosed7-day IL04/17/20250000.00000000.000.000
Aldrin Batista of the Chi White Sox is on the 7-day IL with an unknown injury. Next game is on 04/17/2025 vs. Athletics.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Blake LarsonSP Elbow60-day IL04/17/20250000.00000000.000.000
Blake Larson (SP, White Sox) is on the 60-day IL due to an elbow injury; next game is 04/17/2025 vs. Athletics.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Fraser EllardRP Hamstring15-day IL04/17/20250105.01330465.401.000
Fraser Ellard placed on 15-day IL with a hamstring injury; return date uncertain. Next game: 04/17/2025 vs. Athletics.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Mason AdamsRP Elbow60-day IL04/17/20250000.00000000.000.000
Mason Adams (RP, White Sox) is on the 60-day IL due to an elbow injury. Next game is on 04/17/2025 vs. Athletics.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Drew ThorpeSP Undisclosed60-day IL04/09/20250000.00000000.000.000
Drew Thorpe (SP, Chi White Sox) is on the 60-day IL for Tommy John surgery, likely missing the rest of the season.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Prelander BerroaSP Elbow60-day IL03/25/20250000.00000000.000.000
Prelander Berroa (SP, Chi White Sox) on 60-day IL with a Grade 1 right elbow strain, expected to miss the rest of the season.

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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 Athletics 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
Mason Miller
R
 0 0 0.00 6 0 5 0 100.0% 6.0 3 0 0 0 1 0 0 12 2 0 0.667 0.150 0.190 0.150 0.340
Jose Leclerc
R
 0 1 6.23 9 1 0 2 0.0% 8.7 13 6 6 3 5 0 0 7 1 1 2.077 0.325 0.400 0.650 1.050
Tyler Ferguson
R
 0 0 0.93 9 4 0 1 0.0% 9.7 7 2 1 1 5 0 0 10 0 0 1.241 0.212 0.316 0.303 0.619
Michel Otanez
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
T.J. McFarland
L
 0 0 10.38 9 2 0 0 0.0% 4.3 7 5 5 0 2 0 1 2 0 0 2.077 0.350 0.435 0.600 1.035
Noah Murdock
R
 1 0 6.97 7 1 0 0 0.0% 10.3 8 8 8 0 11 3 2 12 0 1 1.839 0.211 0.412 0.316 0.728
Mitch Spence
R
 0 0 5.27 6 0 1 0 100.0% 13.7 16 13 8 1 5 0 0 17 1 0 1.537 0.281 0.339 0.421 0.760
Jacob Lopez
L
 0 0 0.00 1 0 0 0 0.0% 1.3 3 2 0 0 0 0 0 1 0 0 2.250 0.429 0.429 0.571 1.000
Justin Sterner
R
 0 0 0.00 10 3 0 0 0.0% 10.3 5 0 0 0 6 0 0 14 0 0 1.065 0.143 0.268 0.143 0.411
Brady Basso
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 Severino
R
 0 3 4.01 4 0 0 0 0.0% 24.7 21 12 11 4 10 1 1 21 0 0 1.257 0.226 0.308 0.419 0.727
Jeffrey Springs
L
 3 1 4.50 4 0 0 0 0.0% 20.0 18 12 10 3 10 0 0 20 0 0 1.400 0.234 0.322 0.377 0.698
Osvaldo Bido
R
 2 1 2.61 4 0 0 0 0.0% 20.7 23 7 6 1 7 0 2 14 0 0 1.452 0.291 0.364 0.392 0.756
J.T. Ginn
R
 1 1 3.60 2 0 0 0 0.0% 10.0 8 4 4 1 4 0 0 13 0 0 1.200 0.205 0.279 0.308 0.587
Luis Medina
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
Ken Waldichuk
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

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 Chi White Sox 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
Cameron Booser
L
 0 1 2.57 7 1 0 0 0.0% 7.0 4 2 2 2 2 0 1 10 0 0 0.857 0.167 0.259 0.458 0.718
Jordan Leasure
R
 0 0 4.05 8 1 0 1 0.0% 6.7 7 3 3 1 4 0 0 10 0 0 1.650 0.259 0.355 0.481 0.836
Fraser Ellard
L
 0 1 5.40 5 1 0 0 0.0% 5.0 1 3 3 0 4 0 1 6 0 0 1.000 0.077 0.333 0.077 0.410
Brandon Eisert
L
 0 0 5.87 6 0 0 0 0.0% 7.7 9 5 5 2 1 0 0 12 1 0 1.304 0.281 0.303 0.594 0.897
Penn Murfee
R
 0 1 10.13 9 2 0 1 0.0% 8.0 14 9 9 2 1 0 1 10 0 0 1.875 0.368 0.400 0.632 1.032
Michael Vasil
R
 0 0 0.00 5 0 0 0 0.0% 12.0 5 0 0 0 4 1 1 6 0 0 0.750 0.122 0.217 0.122 0.339
Bryse Wilson
R
 0 0 4.50 9 0 0 0 0.0% 12.0 16 6 6 4 3 0 0 8 0 0 1.583 0.320 0.358 0.640 0.998
Prelander Berroa
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
Steven Wilson
R
 0 0 0.00 1 0 0 0 0.0% 0.7 0 0 0 0 0 0 0 1 0 0 0.000 0.000 0.000 0.000 0.000
Tyler Gilbert
L
 1 1 9.64 5 0 0 0 0.0% 4.7 3 5 5 1 3 0 0 5 0 0 1.286 0.188 0.316 0.375 0.691
Jesse Scholtens
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
Sean Burke
R
 1 3 7.56 4 0 0 0 0.0% 16.7 19 14 14 5 6 0 2 10 1 0 1.500 0.275 0.351 0.551 0.901
Jonathan Cannon
R
 0 2 4.42 4 0 0 0 0.0% 18.3 17 9 9 3 11 0 2 18 1 1 1.527 0.239 0.357 0.394 0.752
Martin Perez
L
 1 1 3.15 4 0 0 0 0.0% 20.0 14 7 7 1 11 0 1 18 0 0 1.250 0.197 0.313 0.310 0.623
Shane Smith
R
 0 1 2.04 3 0 0 0 0.0% 17.7 9 4 4 0 7 0 1 12 0 0 0.906 0.150 0.250 0.167 0.417
Drew Thorpe
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
Ky Bush
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
Jon Heasley
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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 Athletics 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%
Mason Miller
R
 0.00 0.00 0.82 -0.40 -0.16 -0.40 -0.24 0.0% 67.9% 4.5% 1.5 54.5% 18.0 12.00 2.17 100.0% 4.00 0 0 0.0%
Jose Leclerc
R
 6.23 9.24 9.50 7.72 6.79 7.72 7.68 6.7% 58.1% 11.4% 5.2 15.9% 7.3 1.40 1.38 87.0% 1.60 7 3 42.9%
Tyler Ferguson
R
 0.93 3.00 3.06 3.93 3.92 3.93 3.90 2.6% 57.1% 12.2% 4.7 24.4% 9.3 2.00 1.55 94.3% 0.63 4 0 0.0%
Michel Otanez
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%
T.J. McFarland
L
 10.38 6.65 7.79 4.25 4.29 4.25 4.27 0.0% 63.5% 8.7% 4.2 8.7% 4.2 1.00 0.92 50.0% 1.25 10 2 20.0%
Noah Murdock
R
 6.97 3.75 4.65 4.55 4.83 4.55 3.66 0.0% 60.6% 21.2% 9.6 23.1% 10.5 1.09 2.23 61.9% 2.00 4 0 0.0%
Mitch Spence
R
 5.27 4.66 4.42 2.66 2.74 2.66 2.68 1.6% 64.4% 8.1% 3.3 27.4% 11.2 3.40 1.61 40.8% 2.33 2 1 50.0%
Jacob Lopez
L
 0.00 8.75 7.92 1.60 2.38 1.60 1.99 0.0% 69.2% 0.0% 0.0 14.3% 6.8 0.00 0.75 33.3% 1.00 2 1 50.0%
Justin Sterner
R
 0.00 1.02 1.48 2.13 2.22 2.13 2.13 0.0% 60.4% 14.3% 5.2 33.3% 12.2 2.33 1.94 100.0% 0.86 5 2 40.0%
Brady Basso
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 Severino
R
 4.01 3.89 3.72 4.84 4.72 4.84 4.72 3.8% 63.5% 9.4% 3.6 19.8% 7.7 2.10 1.26 75.8% 2.08 0 0 0.0%
Jeffrey Springs
L
 4.50 4.27 4.00 4.55 4.43 4.55 4.54 3.4% 62.3% 11.4% 4.5 22.7% 9.0 2.00 1.50 67.2% 1.33 0 0 0.0%
Osvaldo Bido
R
 2.61 4.13 4.46 3.68 3.73 3.68 3.67 1.1% 64.8% 7.4% 3.0 14.9% 6.1 2.00 1.02 81.7% 0.55 0 0 0.0%
J.T. Ginn
R
 3.60 3.05 2.78 3.00 2.98 3.00 3.05 2.3% 58.4% 9.5% 3.6 31.0% 11.7 3.25 1.70 75.5% 0.00 0 0 0.0%
Luis Medina
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%
Ken Waldichuk
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%

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 Chi White Sox 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%
Cameron Booser
L
 2.57 3.14 2.90 5.24 4.98 5.24 5.18 7.4% 64.5% 7.1% 2.6 35.7% 12.9 5.00 1.71 119.0% 1.33 5 2 40.0%
Jordan Leasure
R
 4.05 5.25 5.27 3.85 3.67 3.85 3.90 3.2% 55.3% 12.9% 5.4 32.3% 13.5 2.50 2.10 83.3% 1.25 5 5 100.0%
Fraser Ellard
L
 5.40 0.11 1.57 3.70 3.97 3.70 3.67 0.0% 57.5% 19.0% 7.2 28.6% 10.8 1.50 2.00 50.0% 3.00 4 0 0.0%
Brandon Eisert
L
 5.87 5.64 4.92 3.75 3.46 3.75 3.85 6.1% 65.1% 3.0% 1.2 36.4% 14.1 12.00 1.70 69.4% 1.75 3 0 0.0%
Penn Murfee
R
 10.13 8.54 9.10 4.60 4.09 4.60 4.60 5.0% 65.3% 2.5% 1.1 25.0% 11.3 10.00 1.38 53.0% 1.20 3 2 66.7%
Michael Vasil
R
 0.00 0.12 0.96 3.35 3.57 3.35 3.08 0.0% 61.9% 8.7% 3.0 13.0% 4.5 1.50 0.83 100.0% 1.10 0 0 0.0%
Bryse Wilson
R
 4.50 7.46 7.26 6.85 6.40 6.85 6.83 7.5% 59.9% 5.5% 2.3 14.5% 6.0 2.67 0.92 97.0% 1.25 2 1 50.0%
Prelander Berroa
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%
Steven Wilson
R
 0.00 -2.97 0.00 0.10 -0.13 0.10 -3.25 0.0% 72.7% 0.0% 0.0 50.0% 13.5 0.00 1.50 0.0% 0.00 1 0 0.0%
Tyler Gilbert
L
 9.64 3.83 3.84 5.67 5.71 5.67 5.58 5.3% 59.5% 15.0% 5.8 25.0% 9.6 1.67 1.71 21.7% 1.50 1 0 0.0%
Jesse Scholtens
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%
Sean Burke
R
 7.56 6.46 6.49 7.24 6.83 7.24 7.24 6.5% 62.4% 7.8% 3.2 13.0% 5.4 1.67 0.96 65.0% 1.46 0 0 0.0%
Jonathan Cannon
R
 4.42 4.78 5.14 5.39 5.19 5.39 5.39 3.6% 61.4% 12.9% 5.4 21.2% 8.8 1.64 1.58 81.4% 1.00 0 0 0.0%
Martin Perez
L
 3.15 2.52 2.79 3.75 3.86 3.75 3.74 1.2% 59.4% 12.8% 5.0 20.9% 8.1 1.64 1.45 77.2% 0.93 0 0 0.0%
Shane Smith
R
 2.04 0.74 1.32 3.10 3.24 3.10 3.11 0.0% 62.1% 10.0% 3.6 17.1% 6.1 1.71 1.08 76.5% 2.10 0 0 0.0%
Drew Thorpe
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%
Ky Bush
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%
Jon Heasley
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.