Spanning Multiple Seasons or entire Careers, From 1901 to 2007, (requiring G≥1000), sorted by greatest SOp9

  Cnt Player             **SO/9**   G  From  To   Ages  GS  CG SHO  GF  W   L   W-L%  SV   IP     H    R   ER   BB   SO    ERA  ERA   HR   BF  IBB HBP  BK  WP Teams
 ----+-----------------+---------+----+----+----+-----+---+---+---+---+---+---+-----+---+------+----+----+----+----+----+------+----+---+-----+---+---+---+---+----------- 
    1 Dan Plesac           8.74   1064 1986 2003 24-41  14   0   0 422  65  71  .478 158 1072    977  478  433  402 1041   3.64  117 105  4539  54  17  10  41 MIL-CHC-PIT-TOR-TOT-ARI-PHI 
    2 Lee Smith            8.73   1022 1980 1997 22-39   6   0   0 802  71  92  .436 478 1289.1 1133  475  434  486 1251   3.03  131  89  5387 100  10   4  47 CHC-BOS-TOT-STL-BAL-CAL-TOT-MON 
    3 Jesse Orosco         8.19   1252 1979 2003 22-46   4   0   0 501  87  80  .521 144 1295   1055  512  455  581 1179   3.16  125 113  5460  86  34  11  40 NYM-LAD-CLE-MIL-BAL-STL-TOT 
    4 Roberto Hernandez    7.94   1010 1991 2007 26-42   3   0   0 667  67  71  .486 326 1071.1 1002  475  411  462  945   3.45  131  96  4632  53  35   1  50 CHW-TOT-TBD-KCR-ATL-PHI-NYM 
    5 Mike Jackson         7.62   1005 1986 2004 21-39   7   0   0 422  62  67  .481 142 1188.1  983  492  451  464 1006   3.42  125 127  4966  80  56  27  39 PHI-SEA-SFG-CIN-CLE-HOU-MIN-CHW 
    6 Rich Gossage         7.47   1002 1972 1994 20-42  37  16   0 681 124 107  .537 310 1809.1 1497  670  605  732 1502   3.01  126 119  7506  90  47   5  63 CHW-PIT-NYY-SDP-CHC-TOT-TEX-OAK-SEA 
    7 Mike Stanton         7.23   1178 1989 2007 22-40   1   0   0 363  68  63  .519  84 1114   1086  523  485  420  895   3.92  112  93  4762  76  33   9  35 ATL-TOT-NYY-NYM-CIN 
    8 John Franco          7.04   1119 1984 2005 23-44   0   0   0 774  90  87  .508 424 1245.2 1166  466  400  495  975   2.89  137  81  5312  78  22   9  54 CIN-NYM-HOU 
    9 Dennis Eckersley     6.58   1071 1975 1998 20-43 361 100  20 577 197 171  .535 390 3285.2 3076 1382 1278  738 2401   3.50  116 347 13534  91  75  16  28 CLE-BOS-TOT-CHC-OAK-STL 
   10 Mike Timlin          6.55   1011 1991 2007 25-41   4   0   0 441  71  69  .507 140 1155   1108  501  455  357  840   3.55  128 109  4855  68  46   3  30 TOR-TOT-SEA-BAL-STL-BOS 
   11 Hoyt Wilhelm         6.43   1070 1952 1972 29-49  52  20   5 651 143 122  .540 227 2254.1 1757  773  632  778 1610   2.52  146 150  9164  61  62   4  90 NYG-TOT-BAL-CHW-LAD 
   12 Jose Mesa            6.03   1022 1987 2007 21-41  95   6   2 633  80 109  .423 321 1548.2 1629  811  750  651 1038   4.36  100 151  6804  57  55   5  75 BAL-TOT-CLE-SEA-PHI-PIT-COL 
   13 Kent Tekulve         4.88   1050 1974 1989 27-42   0   0   0 638  94  90  .511 184 1436.1 1305  526  455  491  779   2.85  132  63  6001 179  17   3  23 PIT-TOT-PHI-CIN 

Seasons/Careers found: 13.

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