First name: Roy
Last name: Mahaffey
Birthdate: 1904-02-09
Bats: R Throws: R
RetroID: mahar101
| Year | Team | Off GS | Def GS | Game Shares | WAR | W | L | Victory Shares |
|---|---|---|---|---|---|---|---|---|
| 1926 | PIT | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0 |
| 1927 | PIT | 0.1 | 0.0 | 0.1 | 0.0 | 0.0 | 0.0 | 0 |
| 1930 | PHA | 0.7 | 0.0 | 0.7 | -0.6 | -0.3 | 1.1 | -1 |
| 1931 | PHA | 0.8 | 0.0 | 0.8 | 0.2 | 0.4 | 0.4 | 1 |
| 1932 | PHA | 1.1 | 0.0 | 1.1 | 0.1 | 0.4 | 0.6 | 1 |
| 1933 | PHA | 0.8 | 0.0 | 0.8 | 0.2 | 0.4 | 0.4 | 1 |
| 1934 | PHA | 0.6 | 0.0 | 0.6 | 0.3 | 0.5 | 0.1 | 2 |
| 1935 | PHA | 0.7 | 0.0 | 0.7 | -0.2 | 0.0 | 0.6 | 0 |
| 1936 | SLA | 0.2 | 0.0 | 0.2 | -0.2 | -0.1 | 0.3 | 0 |
| Career | 5.0 | 0.0 | 5.0 | -0.2 | 1.3 | 3.5 | 4 |
| Year | Team | PA | BatRuns | Adj R | RISP | BSR | DP | ROE | Fld | Pos | DH | Pit | RAA | RPW | WAA | Pos Wins | LgA | WAM | DVoDH |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1926 | PIT | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9.9 | 0.0 | 0.0 | 0.0 | 0.0 | 0 |
| 1927 | PIT | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 10.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0 |
| 1930 | PHA | 60 | -12 | -12 | 0 | -1 | 0 | 0 | 0 | 0 | 0 | 5 | -8 | 11.2 | -0.7 | 0.0 | 0.0 | -0.7 | 0 |
| 1931 | PHA | 69 | -6 | -6 | 0 | -1 | 0 | 0 | 0 | 0 | 0 | 7 | 0 | 10.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0 |
| 1932 | PHA | 93 | -11 | -11 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 9 | -1 | 11.3 | -0.1 | 0.0 | 0.0 | -0.1 | 0 |
| 1933 | PHA | 69 | -7 | -7 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7 | 0 | 11.4 | 0.0 | 0.0 | 0.0 | 0.0 | 0 |
| 1934 | PHA | 50 | -3 | -3 | -2 | 0 | 0 | 1 | 0 | 0 | 0 | 6 | 2 | 10.7 | 0.2 | 0.0 | 0.0 | 0.2 | 0 |
| 1935 | PHA | 54 | -7 | -7 | 0 | 0 | -1 | 0 | 0 | 0 | 0 | 5 | -3 | 10.8 | -0.3 | 0.0 | 0.0 | -0.3 | 0 |
| 1936 | SLA | 17 | -4 | -4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | -2 | 11.9 | -0.2 | 0.0 | 0.0 | -0.2 | 0 |
| Career | 418 | -50 | -50 | -2 | -1 | -1 | 1 | 0 | 0 | 0 | 41 | -12 | - | -1.1 | 0.0 | 0.0 | -1.1 | 0 |
| Year | Team | Lg | G | GS | IP | R | XR | DR | IP/G | RPW | Role | LgAdj | R+ | LI | R_lev+ | WAM | W | L | WAR | VS |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1926 | PIT | NL | 4 | 0.1 | 4.7 | 2 | 2 | 0 | 1.18 | 8.6 | -0.13 | -0.05 | 1 | 0.05 | 1 | 0.1 | 0.2 | 0.0 | 0.2 | 1 |
| 1927 | PIT | NL | 2 | 0.4 | 9.3 | 8 | 5 | 0 | 4.65 | 11.3 | 0.01 | -0.05 | -3 | 0.67 | -3 | -0.3 | -0.1 | 0.5 | -0.2 | 0 |
| 1930 | PHA | AL | 33 | 6.8 | 152.7 | 106 | 89 | 1 | 4.63 | 11.2 | 0.03 | 0.05 | -16 | 0.96 | -16 | -1.4 | 2.0 | 4.8 | 0.0 | 6 |
| 1931 | PHA | AL | 30 | 7.4 | 162.3 | 87 | 95 | 8 | 5.41 | 10.8 | -0.02 | 0.05 | 0 | 0.99 | 0 | 0.0 | 3.7 | 3.7 | 1.5 | 11 |
| 1932 | PHA | AL | 37 | 10.3 | 222.7 | 136 | 129 | 2 | 6.02 | 10.9 | -0.05 | 0.05 | -9 | 1.06 | -9 | -0.8 | 4.4 | 6.0 | 1.4 | 13 |
| 1933 | PHA | AL | 33 | 8.4 | 179.3 | 114 | 97 | -7 | 5.43 | 10.4 | -0.02 | 0.05 | -9 | 1.03 | -9 | -0.9 | 3.3 | 5.1 | 0.8 | 10 |
| 1934 | PHA | AL | 37 | 5.9 | 129.0 | 87 | 74 | -1 | 3.49 | 10.9 | 0.00 | 0.05 | -11 | 0.99 | -11 | -1.0 | 2.0 | 4.0 | 0.3 | 6 |
| 1935 | PHA | AL | 27 | 6.5 | 136.0 | 66 | 79 | 2 | 5.04 | 10.4 | 0.02 | 0.05 | 12 | 1.13 | 13 | 1.2 | 4.5 | 2.1 | 2.6 | 14 |
| 1936 | SLA | AL | 21 | 2.8 | 60.0 | 63 | 40 | -3 | 2.86 | 12.6 | -0.06 | 0.05 | -20 | 0.87 | -19 | -1.5 | -0.1 | 2.9 | -0.9 | 0 |
| Career | 224 | 48.6 | 1056 | 669 | 610 | 2 | -55 | -53 | -4.6 | 19.9 | 29.1 | 5.7 | 61 | |||||||
| Year | Team | Chances | OAA | OAA adj |
|---|---|---|---|---|
| 1926 | PIT | 1 | -1.0 | -1 |
| 1927 | PIT | 1 | 0.0 | 0 |
| 1930 | PHA | 34 | -3.0 | -3 |
| 1931 | PHA | 26 | -2.0 | -2 |
| 1932 | PHA | 45 | -2.0 | -2 |
| 1933 | PHA | 40 | 0.0 | 0 |
| 1934 | PHA | 25 | -1.0 | -1 |
| 1935 | PHA | 28 | 0.0 | 0 |
| 1936 | SLA | 8 | -3.0 | -3 |
| 208 | -12.0 | -12 |
| Year | Team | Lg | G | GS | IP | R | XR | DR | IP/G | RPW | Role | LgAdj | R+ | LI | R_lev+ | WAM | W | L | WAR | VS |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1931 | PHA | MLB | 1 | 0.0 | 1.0 | 1 | 1 | 0 | 1.00 | 11.3 | -0.14 | 0.00 | 0 | 0.07 | 0 | 0.0 | 0.0 | 0.0 | 0.0 | 0 |
| Career | 1 | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||
No batting 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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