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Art Mahaffey played 7 major-league seasons (1960-1966) as a P (185). Career totals and every year-by-year line below come from the SABR/Lahman database (CC BY-SA), covering 1871-2025.
Showing 7 season lines
| Year | Age | Team | G | AB | R | H | HR | RBI | SB | BB | SO | AVG | OPS | OPS+ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1960 | 22 | PHI | 14 | 30 | 1 | 3 | 0 | 1 | 0 | 0 | 8 | .100 | .200 | -43 |
| 1961 | 23 | PHI | 36 | 63 | 3 | 8 | 0 | 3 | 0 | 3 | 20 | .127 | .323 | -11 |
| 1962 | 24 | PHI | 42 | 92 | 6 | 13 | 2 | 10 | 0 | 3 | 29 | .141 | .405 | 12 |
| 1963 | 25 | PHI | 26 | 50 | 2 | 10 | 0 | 1 | 0 | 1 | 12 | .200 | .491 | 47 |
| 1964 | 26 | PHI | 34 | 50 | 4 | 6 | 1 | 4 | 0 | 1 | 26 | .120 | .357 | 3 |
| 1965 | 27 | PHI | 22 | 21 | 1 | 2 | 0 | 0 | 0 | 0 | 11 | .095 | .190 | -44 |
| 1966 | 28 | SLN | 12 | 7 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | .000 | .000 | -100 |
| Year | Age | Team | G | GS | W | L | SV | IP | SO | BB | ERA | ERA+ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1960 | 22 | PHI | 14 | 12 | 7 | 3 | 0 | 93.1 | 56 | 34 | 2.31 | 163 |
| 1961 | 23 | PHI | 36 | 32 | 11 | 19 | 0 | 219.1 | 158 | 70 | 4.10 | 98 |
| 1962 | 24 | PHI | 41 | 39 | 19 | 14 | 0 | 274 | 177 | 81 | 3.94 | 100 |
| 1963 | 25 | PHI | 26 | 22 | 7 | 10 | 0 | 149 | 97 | 48 | 3.99 | 82 |
| 1964 | 26 | PHI | 34 | 29 | 12 | 9 | 0 | 157.1 | 80 | 82 | 4.52 | 78 |
| 1965 | 27 | PHI | 22 | 9 | 2 | 5 | 0 | 71 | 52 | 32 | 6.21 | 57 |
| 1966 | 28 | SLN | 12 | 5 | 1 | 4 | 1 | 35 | 19 | 21 | 6.43 | 56 |
| Year | Pos | G | GS | PO | A | E | DP |
|---|---|---|---|---|---|---|---|
| 1960 | P | 14 | 12 | 6 | 13 | 0 | 0 |
| 1961 | P | 36 | 32 | 14 | 28 | 3 | 2 |
| 1962 | P | 41 | 39 | 14 | 24 | 0 | 1 |
| 1963 | P | 26 | 22 | 11 | 22 | 1 | 0 |
| 1964 | P | 34 | 29 | 6 | 19 | 0 | 2 |
| 1965 | P | 22 | 9 | 4 | 6 | 1 | 0 |
| 1966 | P | 12 | 5 | 1 | 4 | 0 | 0 |
Team codes are the source codes (e.g. NYN for the New York Mets, BS1 for the 1875 Boston club). OPS+ is league-season normalized, not park-adjusted; unrecorded source values (such as RBI in the earliest recorded seasons) are absent, never zero-filled.
MVP, Cy Young and Rookie of the Year voting history (2 ballot finishes, 0 wins). Full year pages: 1962, 1960.
| Year | Award | Lg | Rank | Points | First-place votes |
|---|---|---|---|---|---|
| 1960 | Rookie of the Year | NL | 3 | 3 / 24 | 3 |
| 1962 | Most Valuable Player | NL | 27 | 2 / 280 | 0 |
Every career total and season line is computed from the SABR / Sean Lahman baseball database (2025 edition, CC BY-SA 3.0), the same source behind our historical position leaderboards. Rate stats use league-season normalization only (OPS+ and ERA+ as marked, never park-adjusted); unrecorded early-era values stay absent rather than being invented. Career totals sum only what the source records.
Award winners and MVP / Cy Young / Rookie of the Year voting history come from the same database; the year pages live under MLB award voting history. Official transactions (2011 to the current season) come from the MLB StatsAPI feed on our transactions archive.