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Bill Killefer played 13 major-league seasons (1909-1921) as a C (1,005), 1B (1), OF (1). Career totals and every year-by-year line below come from the SABR/Lahman database (CC BY-SA), covering 1871-2025.
Showing 13 season lines
| Year | Age | Team | G | AB | R | H | HR | RBI | SB | BB | SO | AVG | OPS | OPS+ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1909 | 22 | SLA | 11 | 29 | 0 | 4 | 0 | 1 | 2 | 0 | 2 | .138 | .276 | -10 |
| 1910 | 23 | SLA | 74 | 193 | 14 | 24 | 0 | 7 | 0 | 12 | 31 | .124 | .339 | 9 |
| 1911 | 24 | PHI | 6 | 16 | 3 | 3 | 0 | 2 | 0 | 0 | 2 | .188 | .375 | 9 |
| 1912 | 25 | PHI | 85 | 268 | 18 | 60 | 1 | 21 | 6 | 4 | 14 | .224 | .521 | 47 |
| 1913 | 26 | PHI | 120 | 360 | 25 | 88 | 0 | 24 | 2 | 4 | 17 | .244 | .555 | 63 |
| 1914 | 27 | PHI | 98 | 299 | 27 | 70 | 0 | 27 | 3 | 8 | 17 | .234 | .536 | 64 |
| 1915 | 28 | PHI | 105 | 320 | 26 | 76 | 0 | 24 | 5 | 18 | 14 | .238 | .565 | 77 |
| 1916 | 29 | PHI | 97 | 286 | 22 | 62 | 3 | 27 | 2 | 8 | 14 | .217 | .539 | 71 |
| 1917 | 30 | PHI | 125 | 409 | 28 | 112 | 0 | 31 | 4 | 15 | 21 | .274 | .609 | 93 |
| 1918 | 31 | CHN | 104 | 331 | 30 | 77 | 0 | 22 | 5 | 17 | 10 | .233 | .557 | 75 |
| 1919 | 32 | CHN | 103 | 315 | 17 | 90 | 0 | 22 | 5 | 15 | 8 | .286 | .652 | 102 |
| 1920 | 33 | CHN | 62 | 191 | 16 | 42 | 0 | 16 | 2 | 8 | 5 | .220 | .547 | 62 |
| 1921 | 34 | CHN | 45 | 133 | 11 | 43 | 0 | 16 | 3 | 4 | 4 | .323 | .688 | 89 |
| Year | Pos | G | GS | PO | A | E | DP |
|---|---|---|---|---|---|---|---|
| 1909 | C | 11 | 10 | 36 | 21 | 6 | 2 |
| 1910 | C | 73 | 62 | 311 | 124 | 29 | 16 |
| 1911 | C | 6 | 0 | 29 | 10 | 1 | 1 |
| 1912 | C | 85 | 0 | 407 | 134 | 15 | 17 |
| 1913 | C | 118 | 0 | 570 | 166 | 9 | 16 |
| 1913 | 1B | 1 | 0 | 1 | 0 | 0 | 0 |
| 1914 | C | 90 | 0 | 464 | 154 | 14 | 11 |
| 1915 | C | 104 | 0 | 539 | 126 | 19 | 6 |
| 1916 | C | 91 | 0 | 443 | 89 | 8 | 15 |
| 1917 | C | 120 | 0 | 615 | 138 | 12 | 14 |
| 1917 | OF | 1 | 0 | 2 | 0 | 0 | 0 |
| 1918 | C | 104 | 0 | 487 | 110 | 11 | 12 |
| 1919 | C | 100 | 0 | 478 | 124 | 8 | 7 |
| 1920 | C | 61 | 0 | 304 | 80 | 9 | 6 |
| 1921 | C | 42 | 0 | 147 | 43 | 7 | 6 |
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.
Bill Killefer won: Baseball Magazine All-Star 1917 (ML), Baseball Magazine All-Star 1917 (NL), Baseball Magazine All-Star 1918 (ML), Baseball Magazine All-Star 1918 (NL).
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.