First name: Mark
Last name: Williamson
Birthdate: 1959-07-21
Bats: R Throws: R
MLBAM ID: 124351
Retro ID: willm004
| Year | Team | Lg | G | GS | IP | R | XR | DR | IP/G | RPW | Role | LgAdj | R+ | LI | R_lev+ | WAM | W | L | WAR | VS |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1987 | BAL | AL | 61 | 6.4 | 125.0 | 59 | 67 | 0 | 2.05 | 10.0 | -0.29 | 0.04 | 4 | 1.29 | 5 | 0.5 | 3.7 | 2.7 | 1.8 | 11 |
| 1988 | BAL | AL | 37 | 5.8 | 117.7 | 70 | 57 | -1 | 3.18 | 9.6 | -0.16 | 0.04 | -13 | 1.17 | -14 | -1.5 | 1.4 | 4.4 | -0.3 | 4 |
| 1989 | BAL | AL | 65 | 6.5 | 107.3 | 35 | 49 | 1 | 1.65 | 8.9 | -0.31 | 0.04 | 10 | 1.76 | 14 | 1.6 | 4.8 | 1.6 | 2.9 | 14 |
| 1990 | BAL | AL | 49 | 4.9 | 85.3 | 25 | 39 | 3 | 1.74 | 8.9 | -0.31 | 0.01 | 9 | 1.61 | 12 | 1.4 | 3.9 | 1.1 | 2.5 | 12 |
| 1991 | BAL | AL | 65 | 4.1 | 80.3 | 42 | 39 | 0 | 1.24 | 9.5 | -0.34 | 0.01 | -6 | 1.31 | -7 | -0.7 | 1.3 | 2.7 | 0.1 | 4 |
| 1992 | BAL | AL | 12 | 0.7 | 18.7 | 3 | 9 | 0 | 1.56 | 9.0 | -0.37 | 0.01 | 6 | 0.71 | 5 | 0.6 | 1.0 | -0.2 | 0.8 | 3 |
| 1993 | BAL | AL | 48 | 4.3 | 88.0 | 54 | 47 | -3 | 1.83 | 10.2 | -0.35 | 0.01 | -7 | 1.24 | -8 | -0.8 | 1.4 | 3.0 | 0.1 | 4 |
| 1994 | BAL | AL | 28 | 2.9 | 67.3 | 33 | 40 | 2 | 2.40 | 10.8 | -0.38 | 0.01 | 3 | 0.94 | 3 | 0.3 | 1.7 | 1.1 | 0.9 | 5 |
| Career | 365 | 35.6 | 689.6 | 321 | 347 | 2 | 6 | 10 | 1.4 | 19.2 | 16.4 | 8.8 | 57 | |||||||
| Year | Team | Chances | OAA | OAA adj |
|---|---|---|---|---|
| 1987 | BAL | 25 | -1.0 | -1 |
| 1988 | BAL | 21 | 1.0 | 1 |
| 1989 | BAL | 15 | -1.0 | -1 |
| 1990 | BAL | 17 | 0.0 | 0 |
| 1991 | BAL | 13 | 0.0 | 0 |
| 1992 | BAL | 1 | -1.0 | -1 |
| 1993 | BAL | 19 | 1.0 | 1 |
| 1994 | BAL | 6 | -1.0 | -1 |
| 117 | -2.0 | -2 |
No additional records available for this player.
| 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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