First name: Mike
Last name: Yastrzemski
Birthdate: 1990-08-23
Bats: L Throws: L
MLBAM ID: 573262
Retro ID: yastm001
| Year | Team | Off GS | Def GS | Game Shares | WAR | W | L | Victory Shares |
|---|---|---|---|---|---|---|---|---|
| 2019 | SFN | 5.2 | 0.8 | 6.0 | 3.1 | 4.9 | 1.1 | 15 |
| 2020 | SFN | 2.9 | 0.6 | 3.4 | 3.1 | 4.1 | -0.7 | 12 |
| 2021 | SFN | 6.7 | 1.2 | 7.9 | 2.7 | 5.1 | 2.9 | 15 |
| 2022 | SFN | 7.1 | 1.5 | 8.6 | 1.0 | 3.5 | 5.1 | 11 |
| 2023 | SFN | 4.9 | 1.0 | 5.9 | 1.7 | 3.4 | 2.4 | 10 |
| 2024 | SFN | 6.1 | 1.1 | 7.2 | 0.9 | 3.0 | 4.2 | 9 |
| 2025 | KCA | 2.4 | 0.4 | 2.8 | 1.5 | 2.3 | 0.5 | 7 |
| 2025 | SFN | 4.8 | 0.8 | 5.6 | 0.1 | 1.7 | 3.9 | 5 |
| Career | 40.1 | 7.4 | 47.4 | 14.1 | 28.0 | 19.4 | 84 |
| Year | Team | PA | BatRuns | Adj R | RISP | BSR | DP | ROE | Fld | Pos | DH | Pit | RAA | RPW | WAA | Pos Wins | LgA | WAM | DVoDH |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2019 | SFN | 411 | 9 | 11 | 0 | 1 | 1 | 0 | 8 | -3 | 0 | 0 | 21 | 9.6 | 2.2 | -0.3 | 0.0 | 1.9 | 14 |
| 2020 | SFN | 225 | 16 | 17 | 1 | 0 | 0 | 1 | 7 | -1 | 0 | 0 | 26 | 10.3 | 2.5 | -0.1 | 0.0 | 2.4 | 11 |
| 2021 | SFN | 532 | 2 | 2 | -2 | 2 | 0 | -1 | 12 | -3 | 0 | 0 | 13 | 9.3 | 1.4 | -0.3 | 0.0 | 1.1 | 21 |
| 2022 | SFN | 558 | -2 | 0 | 0 | 1 | 1 | -1 | -7 | -2 | 0 | 0 | -6 | 9.4 | -0.6 | -0.2 | 0.0 | -0.8 | 4 |
| 2023 | SFN | 381 | 4 | 6 | 2 | 1 | 0 | 0 | -3 | -1 | 0 | 0 | 6 | 9.3 | 0.6 | -0.1 | 0.0 | 0.5 | 4 |
| 2024 | SFN | 474 | 1 | 3 | -3 | 0 | 1 | -1 | -3 | -3 | 0 | 0 | -3 | 9.3 | -0.3 | -0.3 | 0.0 | -0.6 | 5 |
| 2025 | KCA | 186 | 8 | 8 | -2 | 1 | 0 | -1 | 3 | -1 | 0 | 0 | 9 | 8.8 | 1.0 | -0.1 | 0.0 | 0.9 | 6 |
| 2025 | SFN | 372 | -3 | -2 | -2 | 1 | 1 | 1 | -6 | -3 | 0 | 0 | -7 | 9.3 | -0.8 | -0.3 | 0.0 | -1.1 | 0 |
| Career | 3,139 | 35 | 45 | -6 | 7 | 4 | -2 | 11 | -17 | 0 | 0 | 59 | - | 6.0 | -1.7 | 0.0 | 4.3 | 65 |
| Year | Team | Lg | G | GS | IP | R | XR | DR | IP/G | RPW | Role | LgAdj | R+ | LI | R_lev+ | WAM | W | L | WAR | VS |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024 | SFN | NL | 1 | 0.0 | 1.0 | 2 | 0 | 0 | 1.00 | 4.3 | -0.43 | 0.00 | -2 | 0.00 | -1 | -0.2 | -0.2 | 0.2 | -0.2 | -1 |
| 2025 | SFN | NL | 1 | 0.0 | 1.0 | 2 | 0 | 0 | 1.00 | 4.3 | -0.43 | 0.00 | -1 | 0.00 | 0 | 0.0 | 0.0 | 0.0 | 0.0 | 0 |
| Career | 2 | 0 | 2 | 4 | 0 | 0 | -3 | -1 | -0.2 | -0.2 | 0.2 | -0.2 | -1 | |||||||
| Year | Team | Chances | OAA | OAA adj |
|---|---|---|---|---|
| 2024 | SFN | 0 | 0.0 | 0 |
| 2025 | SFN | 0 | 0.0 | 0 |
| 0 | 0.0 | 0 |
| Year | Team | POS | BIP | Chances | OAA | OAA adj | DER Runs | Play+ | OF Arm Opps | OF Arm Runs | Total Fielding Runs |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2019 | SFN | LF | 1133 | 136 | 2.0 | 3 | 3 | 3 | 58 | 0 | 3 |
| 2019 | SFN | CF | 84 | 10 | 0.0 | 0 | 0 | -1 | 1 | 0 | 0 |
| 2019 | SFN | RF | 700 | 132 | 6.0 | 6 | 5 | 8 | 37 | 0 | 5 |
| 2020 | SFN | LF | 60 | 8 | 1.0 | 1 | 1 | 2 | 2 | 0 | 1 |
| 2020 | SFN | CF | 517 | 77 | 1.0 | 1 | 1 | 6 | 26 | -1 | 0 |
| 2020 | SFN | RF | 387 | 81 | 4.0 | 4 | 4 | 8 | 39 | 2 | 6 |
| 2021 | SFN | CF | 595 | 76 | -3.0 | -3 | -3 | -8 | 17 | 1 | -2 |
| 2021 | SFN | RF | 1484 | 289 | 15.0 | 16 | 14 | 27 | 94 | 0 | 14 |
| 2022 | SFN | CF | 1587 | 223 | -2.0 | -1 | -1 | -1 | 78 | 1 | 0 |
| 2022 | SFN | RF | 962 | 179 | -8.0 | -7 | -6 | -6 | 92 | -1 | -7 |
| 2023 | SFN | LF | 237 | 30 | 2.0 | 2 | 2 | 4 | 11 | 0 | 2 |
| 2023 | SFN | CF | 939 | 120 | -6.0 | -6 | -5 | -13 | 41 | 0 | -5 |
| 2023 | SFN | RF | 624 | 114 | 0.0 | 1 | 1 | -5 | 40 | -1 | 0 |
| 2024 | SFN | CF | 166 | 30 | 2.5 | 3 | 3 | 6 | 6 | 0 | 3 |
| 2024 | SFN | RF | 1686 | 287 | -8.4 | -7 | -6 | -28 | 131 | 0 | -6 |
| 2025 | KCA | LF | 142 | 16 | -1.8 | -2 | -2 | -4 | 1 | 0 | -2 |
| 2025 | KCA | CF | 97 | 10 | -0.4 | 0 | 0 | -3 | 2 | 0 | 0 |
| 2025 | KCA | RF | 468 | 94 | 3.4 | 4 | 4 | 9 | 48 | 1 | 5 |
| 2025 | SFN | RF | 1346 | 227 | -9.0 | -8 | -7 | -22 | 100 | 1 | -6 |
| LF | 1572 | 190 | 3.2 | 4 | 4 | 5 | 72 | 0 | 4 | ||
| CF | 3985 | 546 | -7.9 | -6 | -5 | -14 | 171 | 1 | -4 | ||
| RF | 7657 | 1403 | 3.0 | 9 | 9 | -9 | 581 | 2 | 11 |
| Year | Team | Off GS | Def GS | Game Shares | WAR | W | L | Victory Shares |
|---|---|---|---|---|---|---|---|---|
| 2021 | SFN | 0.2 | 0.0 | 0.2 | -0.2 | -0.2 | 0.4 | -1 |
| Career | 0.2 | 0.0 | 0.2 | -0.2 | -0.2 | 0.4 | -1 |
| Year | Team | PA | BatRuns | Adj R | RISP | BSR | DP | ROE | Fld | Pos | DH | Pit | RAA | RPW | WAA | Pos Wins | LgA | WAM | DVoDH |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021 | SFN | 13 | -3 | -3 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | -2 | 6.9 | -0.3 | 0.0 | 0.0 | -0.3 | 1 |
| Career | 13 | -3 | -3 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | -2 | - | -0.3 | 0.0 | 0.0 | -0.3 | 1 |
| Stat description | |
|---|---|
| GS | Game Shares |
| WAM | Wins above Majors. Formerly wins above average, but WAM! sounds better than WAA. Credit to Don Sobocinski for the name. |
| WAR | Wins above Replacement |
| VS | Victory Shares |
| W | Wins - Not traditional pitcher wins. Estimate of the number of wins each pitcher was responsible for. His share, as opposed to the shares of his fielders and offense. |
| L | Losses - See wins above, just the opposite side of the final score. |
| BatRuns | Batting runs above average |
| Adj R | Park adjusted batting runs |
| RISP | Runs for hitting better or worse than overall with runners in scoring position |
| BSR | Baserunning runs |
| DP | Double play avoidance runs |
| ROE | Runs from reaching on error |
| Fld | Fielding runs |
| Pos | Position adjustment |
| DH | Designated hitter adjustment |
| Pit | Pitcher batting adjustment |
| RAA | Runs above average before position and league adjustment |
| RPW | Runs per win |
| WAA | Wins above average before position and league adjustment |
| POS Wins | Position adjustment converted to wins |
| LGA | League quality adjustment |
| DVoDH | Defensive Value (in runs) over designated hitter |
| G | Games pitched |
| GS | Game shares. For pitchers based on innings and leverage index |
| XR | Expected runs based on ballparks and opponents faced |
| DR | Defensive runs support |
| Role | Starter vs reliever role adjustment |
| LgAdj | League adjustment |
| R+ | Runs above average |
| LI | Leverage index |
| R_lev+ | Leverage adjusted runs above average |
| Chances | Estimated opportunies to make a defensive play |
| BIP | Balls in play while this player was on the field |
| OAA | Outs above average, based on defensive efficiency assigned at the player level |
| OAA adj | Park adjusted outs above average |
| DER runs | Run value of outs above average |
| Frame Runs | Runs from framing balls and strikes |
| SB Runs | Stolen base prevention runs |
| Block Runs | Wild pitch and passed ball prevention runs |
| Err Runs | Catcher error prevention runs |
| Catcher Runs | Catcher runs from SB, errors, PB, and WP. Does not include framing. |
| Play+ | plays made above average per ball in play |
| GB+ | ground ball plays above average per ball in play |
| DP Start | Runs from starting double plays |
| DP Turn | Runs from turning double plays |
| DP runs | Total double play runs |
| OF Arm opps | Opportunities for an outfielder to make a throwing play |
| OF Arm runs | Runs from throwing from the outfield |
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