Playing for the BOS, For single seasons, From 1901 to 2009, Throws LH, (requiring At least 60% games started and Qualified for league W-L% title), sorted by greatest ERAp
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User's Notes:
Lester having an historic season.
Lester having an historic season.
Cnt Player **ERA ** Year Age Tm Lg G GS CG SHO GF W L W-L% SV IP H R ER BB SO ERA HR BF AB 2B 3B IBB HBP SH SF GDP SB CS Pk BK WP BA OBP SLG OPS OPS Pit Str ----+-----------------+--------+----+---+---+--+---+---+--+---+--+--+--+-----+--+-----+---+---+---+---+---+------+--+----+----+--+--+---+---+---+---+---+---+--+--+--+--+-----+-----+-----+-----+----+----+---- 1 Dutch Leonard 279 1914 22 BOS AL 36 25 17 7 9 19 5 .792 3 224.2 139 34 24 60 176 0.96 3 846 8 0 2 0 2 Lefty Grove 188 1936 36 BOS AL 35 30 22 6 3 17 12 .586 2 253.1 237 90 79 65 130 2.81 14 1049 4 0 0 0 3 Lefty Grove 185 1939 39 BOS AL 23 23 17 2 0 15 4 .789 0 191 180 63 54 58 81 2.54 8 798 1 0 0 0 4 Lefty Grove 175 1935 35 BOS AL 35 30 23 2 4 20 12 .625 1 273 269 105 82 65 121 2.70 6 1137 3 0 2 0 5 Lefty Grove 160 1938 38 BOS AL 24 21 12 1 3 14 4 .778 1 163.2 169 65 56 52 99 3.08 8 706 1 0 3 0 6 Babe Ruth 158 1916 21 BOS AL 44 41 23 9 3 23 12 .657 1 323.2 230 83 63 118 170 1.75 0 1300 8 1 3 0 7 Lefty Grove 158 1937 37 BOS AL 32 32 21 3 0 17 9 .654 0 262 269 101 88 83 153 3.02 9 1127 1 0 5 0 8 Mel Parnell 157 1949 27 BOS AL 39 33 27 4 5 25 7 .781 2 295.1 258 102 91 134 122 2.77 8 1240 5 0 9 0 9 Ray Collins 157 1910 23 BOS AL 35 26 18 4 9 13 11 .542 1 244.2 205 73 44 41 109 1.62 1 937 1 1 1 0 10 Frank Viola 148 1993 33 BOS AL 29 29 2 1 0 11 8 .579 0 183.2 180 76 64 72 91 3.14 12 787 694 32 5 5 6 8 7 15 11 11 1 0 5 .259 .331 .372 .703 84 11 Bill Lee 147 1973 26 BOS AL 38 33 18 1 1 17 11 .607 1 284.2 275 100 87 76 120 2.75 20 1173 1071 39 4 2 5 15 6 33 11 4 4 0 3 .257 .307 .357 .664 81 12 Jon Lester 144 2008 24 BOS AL 33 33 2 2 0 16 6 .727 0 210.1 202 78 75 66 152 3.21 14 874 789 44 1 1 10 6 3 27 8 5 3 1 3 .256 .320 .368 .688 77 3308 2109 13 Bruce Hurst 140 1986 28 BOS AL 25 25 11 4 0 13 8 .619 0 174.1 169 63 58 50 167 2.99 18 721 660 28 4 2 3 5 3 14 4 10 1 0 6 .256 .310 .392 .702 89 14 Mickey McDermott 139 1953 24 BOS AL 32 30 8 4 1 18 10 .643 0 206.1 169 82 69 109 92 3.01 9 876 2 1 5 0 15 Mel Parnell 139 1948 26 BOS AL 35 27 16 1 5 15 8 .652 0 212 205 87 74 90 77 3.14 7 916 4 2 3 0 16 Jon Lester 138 2009 25 BOS AL 28 28 2 0 0 12 7 .632 0 180.2 164 72 69 57 204 3.44 17 749 682 27 2 0 3 1 6 11 14 6 6 0 5 .240 .299 .361 .660 0 3031 1908 17 Mel Parnell 137 1953 31 BOS AL 38 34 12 5 2 21 8 .724 0 241 217 98 82 116 136 3.06 15 1036 4 0 7 0 18 Mel Parnell 137 1951 29 BOS AL 36 29 11 3 4 18 11 .621 2 221 229 99 80 77 77 3.26 11 930 0 0 2 0 19 Ray Collins 136 1911 24 BOS AL 31 24 14 0 6 11 12 .478 1 194.2 184 81 52 44 86 2.40 1 767 4 0 4 0 20 Mel Parnell 135 1950 28 BOS AL 40 31 21 2 8 18 10 .643 3 249 244 116 100 106 93 3.61 17 1070 7 0 4 0 21 Fritz Ostermuelle 135 1934 26 BOS AL 33 23 10 0 8 10 13 .435 3 198.2 200 93 77 99 75 3.49 7 881 1 0 6 0 22 Ray Collins 135 1912 25 BOS AL 27 24 17 4 0 13 8 .619 0 199.1 192 65 56 42 82 2.53 4 794 2 0 0 0 23 Leo Kiely 133 1951 21 BOS AL 17 16 4 0 0 7 7 .500 0 113.1 106 48 42 39 46 3.34 9 474 2 0 3 0 24 Jesse Tannehill 131 1904 29 BOS AL 33 31 30 4 2 21 11 .656 0 281.2 256 89 64 33 116 2.04 5 1134 15 0 3 0 25 Babe Ruth 128 1917 22 BOS AL 41 38 35 6 2 24 13 .649 2 326.1 244 91 73 108 128 2.01 2 1313 11 0 5 0 ----+-----------------+--------+----+---+---+--+---+---+--+---+--+--+--+-----+--+-----+---+---+---+---+---+------+--+----+----+--+--+---+---+---+---+---+---+--+--+--+--+-----+-----+-----+-----+----+----+---- Cnt Player **ERA ** Year Age Tm Lg G GS CG SHO GF W L W-L% SV IP H R ER BB SO ERA HR BF AB 2B 3B IBB HBP SH SF GDP SB CS Pk BK WP BA OBP SLG OPS OPS Pit Str ----+-----------------+--------+----+---+---+--+---+---+--+---+--+--+--+-----+--+-----+---+---+---+---+---+------+--+----+----+--+--+---+---+---+---+---+---+--+--+--+--+-----+-----+-----+-----+----+----+---- 26 Mickey Harris 128 1941 24 BOS AL 35 22 11 1 7 8 14 .364 1 194 189 86 70 86 111 3.25 6 855 2 1 6 0 27 Frank Viola 123 1992 32 BOS AL 35 35 6 1 0 13 12 .520 0 238 214 99 91 89 121 3.44 13 999 886 40 0 4 7 7 10 29 12 5 1 2 12 .242 .313 .331 .644 76 28 Mel Parnell 122 1956 34 BOS AL 21 20 6 1 0 7 6 .538 0 131.1 129 71 55 59 41 3.77 13 567 503 15 4 2 0 3 2 17 0 3 0 0 2 .256 .333 .380 .713 80 29 Dutch Leonard 122 1913 21 BOS AL 42 28 14 3 11 14 17 .452 1 259.1 245 108 69 94 144 2.39 0 1068 4 2 6 0 30 Tom Bolton 122 1990 28 BOS AL 21 16 3 0 2 10 5 .667 0 119.2 111 46 45 47 65 3.38 6 501 443 19 1 3 3 3 5 16 7 5 3 1 1 .251 .323 .339 .662 82 31 Babe Ruth 121 1918 23 BOS AL 20 19 18 1 0 13 7 .650 0 166.1 125 51 41 49 40 2.22 1 660 2 1 3 0 32 Fritz Ostermuelle 120 1935 27 BOS AL 22 19 10 0 3 7 8 .467 1 137.2 135 67 60 78 41 3.92 0 616 3 0 5 0 33 Bill Lee 120 1978 31 BOS AL 28 24 8 1 3 10 10 .500 0 177 198 89 68 59 44 3.46 20 768 693 30 2 2 2 6 7 23 7 7 6 0 0 .286 .340 .421 .761 103 34 Harry Harper 119 1920 25 BOS AL 27 22 11 1 0 5 14 .263 0 162.2 163 73 55 66 71 3.04 9 687 2 0 9 0 35 John Tudor 119 1982 28 BOS AL 32 30 6 1 1 13 10 .565 0 195.2 215 90 79 59 146 3.63 20 847 767 42 4 3 8 8 5 18 9 9 8 2 0 .280 .336 .424 .760 101 36 Dutch Leonard 119 1917 25 BOS AL 37 36 26 4 1 16 17 .485 1 294.1 257 90 71 72 144 2.17 4 1170 5 0 7 0 37 Joe Hesketh 118 1994 35 BOS AL 25 20 0 0 1 8 5 .615 0 114 117 70 54 46 83 4.26 9 495 438 33 2 3 2 1 8 13 13 2 0 1 6 .267 .334 .413 .747 88 38 Dutch Leonard 118 1915 23 BOS AL 32 21 10 2 7 15 7 .682 0 183.1 130 57 48 67 116 2.36 3 705 14 1 2 0 39 Dutch Leonard 117 1916 24 BOS AL 48 34 17 6 13 18 12 .600 6 274 244 87 72 66 144 2.36 6 1060 8 0 8 0 40 Leo Kiely 117 1954 24 BOS AL 28 19 4 1 0 5 8 .385 0 131 153 74 51 58 59 3.50 12 589 518 17 7 1 9 4 20 1 4 0 1 0 .295 .365 .425 .790 113 41 Babe Ruth 114 1915 20 BOS AL 32 28 16 1 3 18 8 .692 0 217.2 166 80 59 85 112 2.44 3 895 6 1 9 0 42 Bob Weiland 114 1933 27 BOS AL 39 27 12 0 9 8 14 .364 3 216.1 197 107 93 100 97 3.87 19 933 5 1 1 0 43 Oscar Judd 114 1943 35 BOS AL 23 20 8 1 2 11 6 .647 0 155.1 131 58 50 69 53 2.90 2 653 3 0 7 0 44 John Curtis 113 1973 25 BOS AL 35 30 10 4 3 13 13 .500 0 221.1 225 103 88 83 101 3.58 24 946 851 30 3 10 2 7 3 27 12 8 2 0 3 .264 .330 .391 .721 98 45 Bruce Hurst 113 1988 30 BOS AL 33 32 7 1 0 18 6 .750 0 216.2 222 98 88 65 166 3.66 21 922 842 40 1 1 2 8 5 15 14 4 4 3 5 .264 .316 .388 .704 92 46 Lefty Grove 113 1940 40 BOS AL 22 21 9 1 1 7 6 .538 0 153.1 159 73 68 50 62 3.99 20 652 1 0 1 0 47 Ray Collins 112 1913 26 BOS AL 30 30 19 3 0 19 8 .704 0 246.2 242 88 72 37 88 2.63 3 960 2 1 0 0 48 Herb Pennock 112 1919 25 BOS AL 32 26 16 5 5 16 8 .667 0 219 223 78 66 48 70 2.71 2 866 3 0 7 0 49 Bill Lee 111 1974 27 BOS AL 38 37 16 1 0 17 15 .531 0 282.1 320 123 110 67 95 3.51 25 1190 1104 45 10 0 4 10 5 39 17 12 13 0 3 .290 .331 .417 .748 107 50 Lloyd Brown 110 1933 28 BOS AL 33 21 9 2 3 8 11 .421 1 163.1 180 93 73 64 37 4.02 4 722 0 0 8 0 ----+-----------------+--------+----+---+---+--+---+---+--+---+--+--+--+-----+--+-----+---+---+---+---+---+------+--+----+----+--+--+---+---+---+---+---+---+--+--+--+--+-----+-----+-----+-----+----+----+---- Cnt Player **ERA ** Year Age Tm Lg G GS CG SHO GF W L W-L% SV IP H R ER BB SO ERA HR BF AB 2B 3B IBB HBP SH SF GDP SB CS Pk BK WP BA OBP SLG OPS OPS Pit Str ----+-----------------+--------+----+---+---+--+---+---+--+---+--+--+--+-----+--+-----+---+---+---+---+---+------+--+----+----+--+--+---+---+---+---+---+---+--+--+--+--+-----+-----+-----+-----+----+----+---- 51 Mel Parnell 109 1952 30 BOS AL 33 29 15 3 3 12 12 .500 2 214 207 94 86 89 107 3.62 13 920 5 0 5 0 52 Jesse Tannehill 109 1905 30 BOS AL 37 32 27 6 5 22 9 .710 0 271.2 238 91 75 59 113 2.48 7 0 13 0 3 0 53 Chuck Stobbs 108 1949 19 BOS AL 26 19 10 0 2 11 6 .647 0 152 145 72 68 75 70 4.03 10 653 2 1 1 0 54 Bob Ojeda 108 1983 25 BOS AL 29 28 5 0 0 12 7 .632 0 173.2 173 85 78 73 94 4.04 15 746 653 32 4 2 3 6 11 13 11 12 1 0 2 .265 .336 .395 .731 95 55 Bruce Hurst 107 1984 26 BOS AL 33 33 9 2 0 12 12 .500 0 218 232 106 95 88 136 3.92 25 958 857 60 1 3 6 3 4 12 8 15 8 1 1 .271 .341 .431 .772 108 56 Ray Collins 107 1914 27 BOS AL 39 30 16 6 5 20 13 .606 0 272.1 252 96 76 56 72 2.51 3 1033 0 0 1 0 57 Bruce Hurst 107 1983 25 BOS AL 33 32 6 2 0 12 12 .500 0 211.1 241 102 96 62 115 4.09 22 903 831 42 5 5 3 3 4 29 17 8 8 2 1 .290 .340 .432 .772 105 58 John Tudor 107 1983 29 BOS AL 34 34 7 2 0 13 12 .520 0 242 236 122 110 81 136 4.09 32 1022 927 37 3 3 4 5 5 19 27 7 2 2 8 .255 .316 .405 .721 91 59 Jeff Fassero 106 2000 37 BOS AL 38 23 0 0 4 8 8 .500 0 130 153 72 69 50 97 4.78 16 577 517 28 2 2 1 7 2 14 18 5 5 0 2 .296 .358 .451 .809 100 2143 1306 60 Mickey McDermott 106 1952 23 BOS AL 30 21 7 2 4 10 9 .526 0 162 139 70 67 92 117 3.72 14 693 3 0 2 0 61 Bob Ojeda 105 1984 26 BOS AL 33 32 8 5 0 12 12 .500 0 216.2 211 106 96 96 137 3.99 17 928 816 34 6 2 2 8 6 15 13 19 2 1 0 .259 .336 .377 .713 93 62 Dick Ellsworth 105 1968 28 BOS AL 31 28 10 1 1 16 7 .696 0 196 196 74 66 37 106 3.03 16 808 754 41 2 3 7 8 2 23 5 2 0 1 5 .260 .300 .383 .683 106 63 Herb Pennock 105 1921 27 BOS AL 32 32 15 1 0 12 14 .462 0 222.2 268 121 100 59 91 4.04 7 967 2 0 0 0 64 Bill Lee 105 1975 28 BOS AL 41 34 17 4 0 17 9 .654 0 260 274 123 114 69 78 3.95 20 1093 1004 42 7 1 3 10 7 29 12 11 10 0 2 .273 .319 .388 .707 91 65 Roger Moret 104 1974 24 BOS AL 31 21 10 1 6 9 10 .474 2 173.1 158 79 72 79 111 3.74 15 745 648 30 4 4 2 6 9 9 20 7 2 0 6 .244 .324 .372 .696 93 66 Jesse Tannehill 104 1907 32 BOS AL 18 16 10 2 2 6 7 .462 1 131 131 59 36 20 29 2.47 3 543 5 0 0 0 67 Bruce Hurst 103 1987 29 BOS AL 33 33 15 3 0 15 13 .536 0 238.2 239 124 117 76 190 4.41 35 1001 911 44 3 5 1 5 8 28 18 10 5 1 3 .262 .317 .432 .749 94 68 David Wells 102 2005 42 BOS AL 30 30 2 0 0 15 7 .682 0 184 220 95 91 21 107 4.45 21 780 743 41 3 0 9 1 6 22 8 5 4 1 4 .296 .321 .444 .765 98 2780 1937 69 Babe Ruth 102 1919 24 BOS AL 17 15 12 0 2 9 5 .643 1 133.1 148 59 44 58 30 2.97 2 591 2 1 5 0 70 Bob Weiland 101 1932 26 BOS AL 43 27 7 0 7 6 16 .273 1 195.2 231 125 98 97 63 4.51 11 900 6 1 1 0 71 Mickey Harris 101 1946 29 BOS AL 34 30 15 0 0 17 9 .654 0 222.2 236 105 90 76 131 3.64 18 975 3 1 2 0 72 Herb Pennock 99 1920 26 BOS AL 37 31 19 4 6 16 13 .552 2 242.1 244 108 99 61 68 3.68 9 1007 4 1 2 0 73 Dutch Leonard 99 1918 26 BOS AL 16 16 12 3 0 8 6 .571 0 125.2 119 51 38 53 47 2.72 0 542 2 0 7 0 74 Gary Peters 98 1970 33 BOS AL 34 34 10 4 0 16 11 .593 0 221.2 221 114 100 83 155 4.06 20 960 859 43 5 2 7 4 7 18 10 2 0 0 16 .257 .325 .389 .714 97 75 Ed Karger 97 1911 28 BOS AL 25 18 6 1 6 5 8 .385 0 131 134 70 49 42 57 3.37 4 539 4 0 4 0 ----+-----------------+--------+----+---+---+--+---+---+--+---+--+--+--+-----+--+-----+---+---+---+---+---+------+--+----+----+--+--+---+---+---+---+---+---+--+--+--+--+-----+-----+-----+-----+----+----+---- Cnt Player **ERA ** Year Age Tm Lg G GS CG SHO GF W L W-L% SV IP H R ER BB SO ERA HR BF AB 2B 3B IBB HBP SH SF GDP SB CS Pk BK WP BA OBP SLG OPS OPS Pit Str ----+-----------------+--------+----+---+---+--+---+---+--+---+--+--+--+-----+--+-----+---+---+---+---+---+------+--+----+----+--+--+---+---+---+---+---+---+--+--+--+--+-----+-----+-----+-----+----+----+---- 76 Joe Hesketh 97 1992 33 BOS AL 30 25 1 0 1 8 9 .471 1 148.2 162 84 72 58 104 4.36 15 659 588 39 2 9 2 5 6 10 17 4 1 0 6 .276 .339 .425 .764 108 77 Frank Tanana 97 1981 27 BOS AL 24 23 5 2 0 4 10 .286 0 141.1 142 70 63 43 78 4.01 17 596 536 22 2 4 4 9 4 15 18 6 0 0 2 .265 .322 .409 .731 103 78 Hal Wiltse 96 1926 22 BOS AL 37 29 9 1 5 8 15 .348 0 196.1 201 112 92 99 59 4.22 6 878 6 0 3 0 79 Chuck Stobbs 96 1950 20 BOS AL 32 21 6 0 3 12 7 .632 1 169.1 158 104 96 88 78 5.10 17 738 5 1 0 0 80 Oscar Judd 96 1942 34 BOS AL 31 19 11 0 7 8 10 .444 2 150.1 135 72 65 90 70 3.89 3 664 2 0 7 0 81 Bruce Hurst 96 1985 27 BOS AL 35 31 6 1 0 11 13 .458 0 229.1 243 123 115 70 189 4.51 31 973 890 45 5 4 3 6 4 17 13 11 7 4 3 .273 .327 .439 .766 104 82 Herb Pennock 95 1922 28 BOS AL 32 26 15 1 3 10 17 .370 1 202 230 108 97 74 59 4.32 7 885 1 0 7 0 83 Lefty Grove 95 1941 41 BOS AL 21 21 10 0 0 7 7 .500 0 134 155 84 65 42 54 4.37 8 598 2 0 3 0 84 Steve Avery 94 1998 28 BOS AL 34 23 0 0 4 10 7 .588 0 123.2 128 74 69 64 57 5.02 14 546 475 27 3 0 4 3 0 17 10 9 3 0 7 .269 .361 .427 .788 103 85 Chuck Stobbs 93 1951 21 BOS AL 34 25 6 0 2 10 9 .526 0 170 180 100 90 74 75 4.76 15 754 5 0 3 0 86 Juan Pizarro 89 1968 31 BOS AL 19 12 6 0 5 6 8 .429 2 107.2 97 46 43 44 84 3.59 15 454 401 12 3 4 0 7 2 8 4 4 2 0 4 .242 .315 .399 .714 115 87 John Curtis 87 1972 24 BOS AL 26 21 8 3 2 11 8 .579 0 154.1 161 69 64 50 106 3.73 8 652 594 27 3 6 0 6 2 17 13 3 0 0 6 .271 .327 .367 .694 107 88 Jesse Tannehill 87 1906 31 BOS AL 27 26 18 2 1 13 11 .542 0 196.1 207 91 69 39 82 3.16 9 0 10 0 5 0 89 Zane Smith 87 1995 34 BOS AL 24 21 0 0 0 8 8 .500 0 110.2 144 78 69 23 47 5.61 7 484 455 29 2 1 1 0 5 16 9 4 3 1 0 .316 .347 .435 .782 100 90 Gary Peters 86 1971 34 BOS AL 34 32 9 1 1 14 11 .560 1 214 241 111 104 70 100 4.37 25 927 837 44 5 3 6 11 3 27 9 4 0 0 2 .288 .346 .442 .788 122 91 Fred Burchell 83 1908 28 BOS AL 31 19 9 0 7 10 8 .556 0 179.2 161 84 59 65 94 2.96 2 727 11 3 11 0 92 Hal Wiltse 83 1927 23 BOS AL 36 29 13 1 6 10 18 .357 1 219 276 146 124 76 47 5.10 5 980 4 0 3 0 93 Mickey Harris 82 1948 31 BOS AL 20 17 6 1 1 7 10 .412 0 113.2 120 73 67 59 42 5.30 10 505 1 1 2 0 94 Tom Bolton 82 1991 29 BOS AL 25 19 0 0 4 8 9 .471 0 110 136 72 64 51 64 5.24 16 499 441 22 4 2 1 2 4 18 5 2 0 0 3 .308 .378 .485 .863 133 95 Ed Karger 80 1910 27 BOS AL 27 25 16 1 2 11 7 .611 1 183.1 162 75 65 53 81 3.19 5 764 5 0 5 0 Seasons/Careers found: 95.
Photos from the George Grantham Bain Collection at the Library of Congress.
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