For single seasons, From 1890 to 2007, From Age 38 to 99, (requiring W≥20), sorted by oldest

Player ages are computed as their age on June 30th

  Cnt                        W Year Age Tm  Lg  G  GS CG SHO GF  L  W-L% SV   IP   H   R   ER  BB  SO   ERA  ERA  HR  BF   AB  2B 3B IBB HBP  SH  SF GDP  SB CS Pk BK WP   BA   OBP   SLG   OPS  OPS   Pit  Str
 ----+-----------------+---+--+----+---+---+--+---+--+--+---+--+--+-----+--+-----+---+---+---+---+---+------+----+--+----+----+--+--+---+---+---+---+---+---+--+--+--+--+-----+-----+-----+-----+----+----+---- 
    1 Warren Spahn          23 1963  42 MLN NL  33 33 22   7  0  7  .767  0 259.2 241  85  75  49 102   2.60  124 23 1037  973 25 10   4   0  10   5  36   4  2  2  0  4  .248  .282  .365  .647   93           
    2 Cy Young              21 1908  41 BOS AL  36 33 30   3  3 11  .656  2 299   230  68  42  37 150   1.26  194  1 1143                  2                        0  4                            0           
    3 Cy Young              21 1907  40 BOS AL  43 37 33   6  5 15  .583  2 343.1 286 101  76  51 147   1.99  129  3 1328                  7                        0  6                            0           
    4 Warren Spahn          21 1961  40 MLN NL  38 34 21   4  3 13  .618  0 262.2 236  96  88  64 115   3.02  123 24 1064  971 36  8   1   4  19   6  30   2  4  3  0  4  .243  .291  .371  .662   84           
    5 Phil Niekro           21 1979  40 ATL NL  44 44 23   1  0 20  .512  0 342   311 160 129 113 208   3.39  120 41 1436 1290 50  6   8  11  14   7  25  40 11  2  4 18  .241  .306  .384  .690   88           
    6 Jamie Moyer           21 2003  40 SEA AL  33 33  1   0  0  7  .750  0 215   199  83  78  66 129   3.27  132 19  897  810 39  1   3   8   7   6  19  11  6  4  0  0  .246  .307  .367  .674   81 3447 2137 
    7 Pete Alexander        21 1927  40 STL NL  37 30 22   2  4 10  .677  3 268   261  94  75  38  48   2.52  157 11 1082                  1                        0  1                            0           
    8 Early Wynn            22 1959  39 CHW AL  37 37 14   5  0 10  .688  0 255.2 202 106  90 119 179   3.17  119 20 1076  936 33  1   5   9   5   6  18  14  8  0  0  5  .216  .308  .317  .625   78           
    9 Warren Spahn          21 1960  39 MLN NL  40 33 18   4  5 10  .677  2 267.2 254 114 104  74 154   3.50   98 24 1110 1018 36  3   9   4  10   4  25   3  2  4  0  1  .250  .302  .361  .663   89           
   10 Eddie Plank           21 1915  39 SLM FL  42 31 23   6 10 11  .656  3 268.1 212  75  62  54 147   2.08  153  1 1044                  3                        1  4                            0           
   11 Gaylord Perry         21 1978  39 SDP NL  37 37  5   2  0  6  .778  0 260.2 241  96  79  66 154   2.73  121  9 1055  970 46  7   8   2   8   9  24  18 16  2  3  4  .248  .295  .338  .633   90           
   12 Warren Spahn          21 1959  38 MLN NL  40 36 21   4  3 15  .583  0 292   282 106  96  70 143   2.96  120 21 1203 1118 45  8   9   1  13   4  18   1  2  1  0  2  .252  .296  .363  .659   87           
   13 Jamie Moyer           20 2001  38 SEA AL  33 33  1   0  0  6  .769  0 209.2 187  84  80  44 119   3.43  121 24  851  781 34  3   4  10   5  11  14  12  7  1  0  1  .239  .285  .383  .668   79 3127 1954 
   14 Randy Johnson         24 2002  38 ARI NL  35 35  8   4  0  5  .828  0 260   197  78  67  71 334   2.32  197 26 1035  945 42  5   1  13   4   2  19  19 15  3  2  3  .208  .273  .346  .619   59 4057 2654 
   15 Roger Clemens         20 2001  38 NYY AL  33 33  0   0  0  3  .870  0 220.1 205  94  86  72 213   3.51  128 19  918  833 44  3   1   5   4   4  21  34  6  3  0 14  .246  .309  .375  .684   78 3718 2327 
   16 Spud Chandler         20 1946  38 NYY AL  34 32 20   6  2  8  .714  2 257.1 200  71  60  90 138   2.10  165  7 1028                  1                        1  3                            0           

Seasons/Careers found: 16.

 Photos from the George Grantham Bain Collection at the Library of Congress.