Clay Buchholz had a 58-33 record with an ERA of 3.60 and 567 strikeouts in 123 appearances between the 2007 and 2013 seasons.
| NAME | SEASON | TM | G | W | L | W% | GS | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | GF | IBB | TBF | WP | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | WHIP | BABIP | RA | ERA- | FIP | FIP- | H/9 | PRAA | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | C. Buchholz | 2007 | 4 | 3 | 1 | .750 | 3 | 1.59 | 22 | 1 | 1 | 0 | 22.2 | 14 | 4 | 6 | 0 | 10 | 1 | 0 | 0 | 88 | 0 | 8.74 | 3.97 | 2.20 | 0.00 | 25.0 | 11.4 | 1.06 | .255 | 2.38 | 34 | 2.74 | 64 | 5.56 | 4 | |
| 2 | | C. Buchholz | 2008 | 16 | 2 | 9 | .182 | 15 | 6.75 | 72 | 1 | 0 | 0 | 76.0 | 93 | 57 | 63 | 11 | 41 | 2 | 0 | 1 | 357 | 2 | 8.53 | 4.86 | 1.76 | 1.30 | 20.2 | 11.5 | 1.76 | .355 | 7.46 | 149 | 4.81 | 115 | 11.01 | -5.5 | |
| 3 | | C. Buchholz | 2009 | 16 | 7 | 4 | .636 | 16 | 4.21 | 68 | 0 | 0 | 0 | 92.0 | 91 | 43 | 44 | 13 | 36 | 2 | 0 | 1 | 399 | 1 | 6.65 | 3.52 | 1.89 | 1.27 | 17.0 | 9.0 | 1.38 | .279 | 4.30 | 90 | 4.68 | 108 | 8.90 | -3.9 | |
| 4 | | C. Buchholz | 2010 | 28 | 17 | 7 | .708 | 28 | 2.33 | 120 | 1 | 1 | 0 | 173.2 | 142 | 45 | 55 | 9 | 67 | 5 | 0 | 1 | 711 | 7 | 6.22 | 3.47 | 1.79 | 0.47 | 16.9 | 9.4 | 1.20 | .261 | 2.85 | 54 | 3.61 | 87 | 7.36 | 10 | |
| 5 | | C. Buchholz | 2011 | 14 | 6 | 3 | .667 | 14 | 3.48 | 60 | 0 | 0 | 0 | 82.2 | 76 | 32 | 34 | 10 | 31 | 2 | 0 | 1 | 353 | 3 | 6.53 | 3.38 | 1.94 | 1.09 | 17.0 | 8.8 | 1.29 | .264 | 3.70 | 82 | 4.34 | 110 | 8.27 | -3.6 | |
| 6 | | C. Buchholz | 2012 | 29 | 11 | 8 | .579 | 29 | 4.56 | 129 | 2 | 1 | 0 | 189.1 | 187 | 96 | 104 | 25 | 64 | 12 | 0 | 2 | 802 | 2 | 6.13 | 3.04 | 2.02 | 1.19 | 16.1 | 8.0 | 1.33 | .283 | 4.94 | 108 | 4.64 | 115 | 8.89 | -13 | |
| 7 | | C. Buchholz | 2013 | 16 | 12 | 1 | .923 | 16 | 1.74 | 96 | 1 | 1 | 0 | 108.1 | 75 | 21 | 23 | 4 | 36 | 1 | 0 | 0 | 416 | 1 | 7.98 | 2.99 | 2.67 | 0.33 | 23.1 | 8.7 | 1.02 | .254 | 1.91 | 42 | 2.78 | 71 | 6.23 | 13.5 | |
| Total | 123 | 58 | 33 | .637 | 121 | 3.60 | 567 | 6 | 4 | 0 | 744.2 | 678 | 298 | 329 | 72 | 285 | 25 | 0 | 6 | 3,126 | 16 | 6.85 | 3.44 | 1.99 | 0.87 | 18.1 | 9.1 | 1.29 | .278 | 3.98 | 82 | 4.06 | 99 | 8.19 | 1.5 |
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| NL East | W | L | PCT | GB |
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75 | 53 | .586 | ||
70 | 58 | .547 | 5.0 | |
64 | 64 | .500 | 11.0 | |
61 | 68 | .473 | 14.5 | |
58 | 70 | .453 | 17.0 | |
| NL Central | W | L | PCT | GB |
79 | 49 | .617 | ||
74 | 54 | .578 | 5.0 | |
66 | 63 | .512 | 13.5 | |
63 | 66 | .488 | 16.5 | |
61 | 67 | .477 | 18.0 | |
| NL West | W | L | PCT | GB |
77 | 51 | .602 | ||
68 | 60 | .531 | 9.0 | |
67 | 61 | .523 | 10.0 | |
52 | 75 | .409 | 24.5 | |
50 | 77 | .394 | 26.5 |
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76 | 51 | .598 | ||
72 | 55 | .567 | 4.0 | |
68 | 59 | .535 | 8.0 | |
63 | 66 | .488 | 14.0 | |
61 | 67 | .477 | 15.5 | |
| AL Central | W | L | PCT | GB |
66 | 61 | .520 | ||
63 | 65 | .492 | 3.5 | |
62 | 66 | .484 | 4.5 | |
61 | 66 | .480 | 5.0 | |
55 | 74 | .426 | 12.0 | |
| AL West | W | L | PCT | GB |
64 | 64 | .500 | ||
63 | 65 | .492 | 1.0 | |
60 | 68 | .469 | 4.0 | |
51 | 77 | .398 | 13.0 | |
49 | 79 | .383 | 15.0 |
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