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Jeremy Affeldt played 14 major-league seasons (2002-2015) as a P (774). Career totals and every year-by-year line below come from the SABR/Lahman database (CC BY-SA), covering 1871-2025.
Showing 9 season lines
| Year | Age | Team | G | AB | R | H | HR | RBI | SB | BB | SO | AVG | OPS | OPS+ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2003 | 24 | KCA | 36 | 6 | 0 | 2 | 0 | 2 | 0 | 1 | 1 | .333 | .762 | 107 |
| 2006 | 27 | KCA | 27 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | .000 | .000 | -100 |
| 2006 | 27 | COL | 27 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .000 | .000 | -100 |
| 2008 | 29 | CIN | 74 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .000 | .000 | -100 |
| 2009 | 30 | SFN | 74 | 2 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | .500 | 1.000 | 174 |
| 2010 | 31 | SFN | 53 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | .000 | .000 | -100 |
| 2011 | 32 | SFN | 67 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | .000 | .500 | 57 |
| 2012 | 33 | SFN | 67 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .000 | .000 | -100 |
| 2015 | 36 | SFN | 52 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | .000 | .000 | -100 |
| Year | Age | Team | G | GS | W | L | SV | IP | SO | BB | ERA | ERA+ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2002 | 23 | KCA | 34 | 7 | 3 | 4 | 0 | 77.2 | 67 | 37 | 4.64 | 96 |
| 2003 | 24 | KCA | 36 | 18 | 7 | 6 | 4 | 126 | 98 | 38 | 3.93 | 115 |
| 2004 | 25 | KCA | 38 | 8 | 3 | 4 | 13 | 76.1 | 49 | 32 | 4.95 | 93 |
| 2005 | 26 | KCA | 49 | 0 | 0 | 2 | 0 | 49.2 | 39 | 29 | 5.25 | 83 |
| 2006 | 27 | KCA | 27 | 9 | 4 | 6 | 0 | 70 | 28 | 42 | 5.91 | 77 |
| 2006 | 27 | COL | 27 | 0 | 4 | 2 | 1 | 27.1 | 20 | 13 | 6.91 | 65 |
| 2007 | 28 | COL | 75 | 0 | 4 | 3 | 0 | 59 | 46 | 33 | 3.51 | 126 |
| 2008 | 29 | CIN | 74 | 0 | 1 | 1 | 0 | 78.1 | 80 | 25 | 3.33 | 129 |
| 2009 | 30 | SFN | 74 | 0 | 2 | 2 | 0 | 62.1 | 55 | 31 | 1.73 | 242 |
| 2010 | 31 | SFN | 53 | 0 | 4 | 3 | 4 | 50 | 44 | 24 | 4.14 | 97 |
| 2011 | 32 | SFN | 67 | 0 | 3 | 2 | 3 | 61.2 | 54 | 24 | 2.63 | 145 |
| 2012 | 33 | SFN | 67 | 0 | 1 | 2 | 3 | 63.1 | 57 | 23 | 2.70 | 146 |
| 2013 | 34 | SFN | 39 | 0 | 1 | 5 | 0 | 33.2 | 21 | 17 | 3.74 | 100 |
| 2014 | 35 | SFN | 62 | 0 | 4 | 2 | 0 | 55.1 | 41 | 14 | 2.28 | 161 |
| 2015 | 36 | SFN | 52 | 0 | 2 | 2 | 0 | 35.1 | 21 | 14 | 5.86 | 67 |
| Year | Pos | G | GS | PO | A | E | DP |
|---|---|---|---|---|---|---|---|
| 2002 | P | 34 | 7 | 4 | 14 | 2 | 1 |
| 2003 | P | 36 | 18 | 4 | 19 | 1 | 2 |
| 2004 | P | 38 | 8 | 3 | 12 | 2 | 2 |
| 2005 | P | 49 | 0 | 1 | 6 | 1 | 0 |
| 2006 | P | 54 | 9 | 1 | 13 | 1 | 1 |
| 2007 | P | 75 | 0 | 2 | 12 | 0 | 0 |
| 2008 | P | 74 | 0 | 7 | 22 | 1 | 2 |
| 2009 | P | 74 | 0 | 4 | 12 | 1 | 2 |
| 2010 | P | 53 | 0 | 3 | 15 | 3 | 0 |
| 2011 | P | 67 | 0 | 7 | 11 | 0 | 0 |
| 2012 | P | 67 | 0 | 5 | 13 | 1 | 1 |
| 2013 | P | 39 | 0 | 1 | 9 | 0 | 0 |
| 2014 | P | 62 | 0 | 0 | 20 | 0 | 2 |
| 2015 | P | 52 | 0 | 3 | 6 | 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 (1 ballot finishes, 0 wins). Full year pages: 2009.
| Year | Award | Lg | Rank | Points | First-place votes |
|---|---|---|---|---|---|
| 2009 | Most Valuable Player | NL | 28 | 1 / 448 | 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.