Oakland Athletics (1968-99)
Single Season ERA (min 50 IP)
RANK OAKLAND A'S PITCHERS YEAR ERA IP ER
1 Eckersley, Dennis 1990 0.61 73.3 5 2 Knowles, Darold 1972 1.37 65.7 10 3 Eckersley, Dennis 1989 1.56 57.7 10 4 Nelson, Gene 1990 1.57 74.7 13 5 Blue, Vida 1971 1.82 312.0 63 6 Grant, Mudcat 1970 1.82 123.3 25 7 Eckersley, Dennis 1992 1.91 80.0 17 8 Fingers, Rollie 1973 1.92 126.7 27 9 Ontiveros, Steve 1985 1.93 74.7 16 10 Hunter, Catfish 1972 2.04 295.3 67 11 Lindblad, Paul 1974 2.06 100.7 23 12 Roland, Jim 1969 2.19 86.3 21 13 Burns, Todd 1989 2.24 96.3 24 14 Nash, Jim 1968 2.28 228.7 58 15 Todd, Jim 1975 2.29 122.0 31 16 McCatty, Steve 1981 2.33 185.7 48 17 Honeycutt, Rick 1989 2.35 76.7 20 18 Blue, Vida 1976 2.35 298.3 78 19 Eckersley, Dennis 1988 2.35 72.7 19 20 Segui, Diego 1968 2.39 83.0 22 21 Lindblad, Paul 1968 2.40 56.3 15 22 Odom, Blue Moon 1968 2.45 231.3 63 23 Fingers, Rollie 1976 2.47 134.7 37 24 Hunter, Catfish 1974 2.49 318.3 88 25 Torrez, Mike 1976 2.50 266.3 74 26 Odom, Blue Moon 1972 2.50 194.3 54 27 Fingers, Rollie 1972 2.51 111.3 31 28 Holtzman, Ken 1972 2.51 265.3 74 29 Norris, Mike 1980 2.53 284.3 80 30 Segui, Diego 1970 2.56 162.0 46 31 Stewart, Dave 1990 2.56 267.0 76 32 Moore, Mike 1989 2.61 241.7 70 33 Torrealba, Pablo 1977 2.62 116.7 34 34 Sosa, Elias 1978 2.64 109.0 32 35 Fingers, Rollie 1974 2.65 119.0 35 36 Ontiveros, Steve 1994 2.65 115.3 34 37 Locker, Bob 1972 2.65 78.0 23 38 Lindblad, Paul 1970 2.70 63.3 19 39 Honeycutt, Rick 1990 2.70 63.3 19 40 Caudill, Bill 1984 2.71 96.3 29 41 Lindblad, Paul 1975 2.72 122.3 37 42 Haas, Moose 1986 2.74 72.3 22 43 Pina, Horacio 1973 2.76 88.0 27 44 Atherton, Keith 1983 2.77 68.3 21 45 Lachemann, Marcel 1970 2.78 58.3 18 46 Blue, Vida 1972 2.80 151.0 47 47 Burgmeier, Tom 1983 2.81 96.0 30 48 Howell, Jay 1985 2.85 98.0 31 49 Locker, Bob 1971 2.86 72.3 23 50 Locker, Bob 1970 2.88 56.3 18 51 Cadaret, Greg 1988 2.89 71.7 23 52 Keough, Matt 1980 2.92 250.0 81 53 Odom, Blue Moon 1969 2.92 231.3 75 54 Hamilton, Dave 1972 2.93 101.3 33 55 Lacey, Bob 1980 2.94 79.7 26 56 Welch, Bob 1990 2.95 238.0 78 57 Moore, Mike 1991 2.96 210.0 69 58 Hunter, Catfish 1971 2.96 273.7 90 59 Eckersley, Dennis 1991 2.96 76.0 25 60 Coleman, Joe 1977 2.96 127.7 42 61 Holtzman, Ken 1973 2.97 297.3 98 62 Burns, Todd 1990 2.97 78.7 26 63 Giusti, Dave 1977 2.98 60.3 20 64 Fingers, Rollie 1975 2.98 126.7 42 65 Fingers, Rollie 1971 2.99 129.3 43 66 Langford, Rick 1981 2.99 195.3 65 67 Dobson, Chuck 1968 3.00 225.3 75 68 Abbott, Glenn 1974 3.00 96.0 32 69 Horlen, Joe 1972 3.00 84.0 28 70 Plunk, Eric 1988 3.00 78.0 26 71 Welch, Bob 1989 3.00 209.7 70 72 Lacey, Bob 1978 3.01 119.7 40 73 Blue, Vida 1975 3.01 278.0 93 74 Parrett, Jeff 1992 3.02 98.3 33 75 Lacey, Bob 1977 3.03 121.7 41 76 Eckersley, Dennis 1987 3.03 115.7 39 77 Lindblad, Paul 1976 3.06 114.7 39 78 Nelson, Gene 1988 3.06 111.7 38 79 Holtzman, Ken 1974 3.07 255.3 87 80 Knowles, Darold 1973 3.09 99.0 34 81 Krausse, Lew 1968 3.11 185.0 64 82 Segui, Diego 1971 3.14 146.3 51 83 Holtzman, Ken 1975 3.14 266.3 93 84 Burris, Ray 1984 3.15 211.7 74 85 Hamilton, Dave 1974 3.15 117.0 41 86 Burns, Todd 1988 3.16 102.7 36 87 Rogers, Kenny 1998 3.17 238.7 84 88 Underwood, Tom 1981 3.18 51.0 18 89 Stewart, Dave 1988 3.23 275.7 99 90 *Hudson, Tim 1999 3.23 136.3 49 91 Keough, Matt 1978 3.24 197.3 71 92 Bahnsen, Stan 1975 3.24 100.0 36 93 Blue, Vida 1974 3.25 282.3 102 94 Heaverlo, Dave 1978 3.25 130.0 47 95 Langford, Rick 1980 3.26 290.0 105 96 Nelson, Gene 1989 3.26 80.0 29 97 Welch, Bob 1992 3.27 123.7 45 98 Sprague Sr., Ed 1968 3.28 68.7 25 99 Blue, Vida 1973 3.28 263.7 96 100 Downs, Kelly 1992 3.29 82.0 30 101 Underwood, Tom 1982 3.29 153.0 56 102 Stewart, Dave 1989 3.32 257.7 95 103 Hunter, Catfish 1973 3.34 256.3 95 104 Bahnsen, Stan 1976 3.34 143.0 53 105 Hunter, Catfish 1968 3.35 234.0 87 106 Hunter, Catfish 1969 3.35 247.0 92 107 Howell, Jay 1986 3.38 53.3 20 108 Johnson, John Henry 1978 3.39 186.0 70 109 Jones, Jeff 1981 3.39 61.0 23 110 Keough, Matt 1981 3.40 140.3 53 111 Wirth, Alan 1978 3.43 81.3 31 112 Langford, Rick 1978 3.43 175.7 67 113 Beard, Dave 1982 3.44 91.7 35 114 Young, Curt 1986 3.45 198.0 76 115 Bair, Doug 1977 3.46 83.3 32 116 Honeycutt, Rick 1988 3.50 79.7 31 117 Langford, Rick 1985 3.51 59.0 23 118 Bosman, Dick 1975 3.52 122.7 48 119 Rijo, Jose 1985 3.53 63.7 25 120 *Jones, Doug 1999 3.55 104.0 41 121 Taylor, Bill 1998 3.58 73.0 29 122 Knowles, Darold 1971 3.59 52.7 21 123 Krueger, Bill 1983 3.61 109.7 44 124 Welch, Bob 1988 3.64 244.7 99 125 Fingers, Rollie 1970 3.65 148.0 60 126 Stewart, Dave 1992 3.66 199.3 81 127 Darling, Ron 1992 3.66 206.3 84 128 Mohler, Mike 1996 3.67 81.0 33 129 Nash, Jim 1969 3.67 115.3 47 130 Stewart, Dave 1987 3.68 261.3 107 131 Siebert, Sonny 1975 3.69 61.0 25 132 Lindblad, Paul 1973 3.69 78.0 32 133 Hamilton, Dave 1979 3.70 82.7 34 134 Davis, Storm 1988 3.70 201.7 83 135 Fingers, Rollie 1969 3.71 119.0 49 136 Young, Curt 1989 3.73 111.0 46 137 Stewart, Dave 1986 3.74 149.3 62 138 Dobson, Chuck 1970 3.74 267.0 111 139 Norris, Mike 1981 3.75 172.7 72 140 Norris, Mike 1983 3.76 88.7 37 141 Leiper, Dave 1987 3.78 52.3 22 142 Odom, Blue Moon 1970 3.80 156.3 66 143 Nunez, Edwin 1993 3.81 75.7 32 144 Hunter, Catfish 1970 3.81 262.3 111 145 Dobson, Chuck 1971 3.81 189.0 80 146 Todd, Jim 1976 3.81 82.7 35 147 Odom, Blue Moon 1974 3.81 87.3 37 148 *Mathews, T.J. 1999 3.81 59.0 25 149 Taylor, Bill 1997 3.82 73.0 31 150 Andujar, Joaquin 1986 3.82 155.3 66 151 Blue, Vida 1977 3.83 279.7 119 152 Kingman, Brian 1980 3.83 211.3 90 153 Groom, Buddy 1996 3.84 77.3 33 154 McCatty, Steve 1980 3.86 221.7 95 155 Boever, Joe 1993 3.86 79.3 34 156 Dobson, Chuck 1969 3.86 235.3 101 157 Sanderson, Scott 1990 3.88 206.3 89 158 Sutton, Don 1985 3.89 194.3 84 159 Nelson, Gene 1987 3.93 123.7 54 160 Conroy, Tim 1983 3.94 162.3 71 161 Kingman, Brian 1981 3.95 100.3 44 162 McCatty, Steve 1982 3.99 128.7 57 163 McCatty, Steve 1983 3.99 167.0 74 164 Ontiveros, Steve 1987 4.00 150.7 67 165 Adams, Willie 1996 4.01 76.3 34 166 Birtsas, Tim 1985 4.01 141.3 63 167 Langford, Rick 1977 4.02 208.3 93 168 Codiroli, Chris 1986 4.03 91.7 41 169 Corsi, Jim 1996 4.03 73.7 33 170 Underwood, Tom 1983 4.04 144.7 65 171 Young, Curt 1984 4.06 108.7 49 172 Young, Curt 1987 4.08 203.0 92 173 Darling, Ron 1991 4.08 75.0 34 174 Bosman, Dick 1976 4.10 112.0 51 175 Aker, Jack 1968 4.10 74.7 34 176 Warren, Mike 1983 4.11 65.7 30 177 Moore, Mike 1992 4.12 223.0 102 178 Lindblad, Paul 1969 4.14 78.3 36 179 Young, Curt 1988 4.14 156.3 72 180 Prieto, Ariel 1996 4.15 125.7 58 181 Reyes, Carlos 1994 4.15 78.0 36 *Worrell, Tim 1999 4.15 69.3 32 183 Eckersley, Dennis 1993 4.16 67.0 31 184 Heaverlo, Dave 1979 4.20 85.7 40 185 Langford, Rick 1982 4.21 237.3 111 186 Witt, Bobby 1993 4.21 220.0 103 187 McCatty, Steve 1979 4.22 185.7 87 188 Knowles, Darold 1974 4.22 53.3 25 189 Groom, Buddy 1998 4.24 57.3 27 190 Mitchell, Paul 1976 4.25 142.0 67 191 Abbott, Glenn 1975 4.25 114.3 54 192 Langford, Rick 1979 4.28 218.7 104 193 Small, Aaron 1997 4.28 96.7 46 194 Odom, Blue Moon 1971 4.29 140.7 67 195 Renko, Steve 1978 4.29 151.0 72 196 *Rogers, Kenny 1999 4.30 119.3 57 197 Atherton, Keith 1985 4.30 104.7 50 198 Kingman, Brian 1979 4.31 112.7 54 199 Chitren, Steve 1991 4.33 60.3 29 200 Taylor, Bill 1996 4.33 60.3 29 201 Atherton, Keith 1984 4.33 104.0 50 202 *Rigby, Brad 1999 4.33 62.3 30 203 Baker, Steve 1983 4.33 54.0 26 204 *Olivares, Omar 1999 4.34 74.7 36 205 Klink, Joe 1991 4.35 62.0 30 206 Davis, Storm 1989 4.36 169.3 82 207 Johnson, John Henry 1979 4.36 84.7 41 208 Ontiveros, Steve 1995 4.37 129.7 63 209 Hamilton, Dave 1973 4.39 69.7 34 210 Heimueller, Gorman 1983 4.41 83.7 41 211 Haynes, Jimmy 1997 4.42 73.3 36 212 Krausse, Lew 1969 4.44 140.0 69 213 Codiroli, Chris 1985 4.46 226.0 112 214 Codiroli, Chris 1983 4.46 205.7 102 215 Kingman, Brian 1982 4.48 122.7 61 216 Odom, Blue Moon 1973 4.49 150.3 75 217 Darling, Ron 1994 4.50 160.0 80 218 Mooneyham, Bill 1986 4.52 99.7 50 219 Krueger, Bill 1985 4.52 151.3 76 220 Stottlemyre, Todd 1995 4.55 209.7 106 221 Welch, Bob 1991 4.58 220.0 112 222 Mathews, T.J. 1998 4.58 72.7 37 223 Ontiveros, Steve 1988 4.61 54.7 28 224 Johns, Doug 1995 4.61 54.7 28 225 Broberg, Pete 1978 4.62 165.7 85 226 Rijo, Jose 1986 4.65 193.7 100 227 Moore, Mike 1990 4.65 199.3 103 228 Telgheder, Dave 1996 4.65 79.3 41 229 Perry, Jim 1975 4.66 67.7 35 230 Medich, Doc 1977 4.69 147.7 77 231 Lauzerique, George 1969 4.70 61.3 32 232 Ontiveros, Steve 1986 4.71 72.7 38 233 Plunk, Eric 1987 4.74 95.0 50 234 Krueger, Bill 1984 4.75 142.0 75 235 McCatty, Steve 1984 4.76 179.7 95 236 Norris, Mike 1982 4.76 166.3 88 237 Norris, Mike 1977 4.77 77.3 41 238 Norris, Mike 1976 4.78 96.0 51 239 Reyes, Carlos 1996 4.78 122.3 65 240 Hawkins, Andy 1991 4.79 77.0 41 241 Norris, Mike 1979 4.80 146.3 78 242 *Heredia, Gil 1999 4.81 200.3 107 243 Eckersley, Dennis 1995 4.83 50.3 27 244 Candiotti, Tom 1998 4.84 201.0 108 245 Young, Curt 1990 4.85 124.3 67 246 Rigby, Brad 1997 4.87 77.7 42 247 Van Poppel, Todd 1995 4.88 138.3 75 248 Warren, Mike 1984 4.90 90.0 49 249 Sorensen, Larry 1984 4.91 183.3 100 250 Prieto, Ariel 1995 4.97 58.0 32 251 Young, Curt 1991 5.00 68.3 38 252 Oquist, Mike 1997 5.02 107.7 60 253 Van Poppel, Todd 1993 5.04 84.0 47 254 Prieto, Ariel 1997 5.04 125.0 70 255 Witt, Bobby 1994 5.04 135.7 76 256 Keough, Matt 1979 5.04 176.7 99 257 Lamp, Dennis 1987 5.08 56.7 32 258 Reyes, Carlos 1995 5.09 69.0 39 259 Haynes, Jimmy 1998 5.09 194.3 110 260 Campbell, Kevin 1992 5.12 65.0 37 261 Mohler, Mike 1997 5.13 101.7 58 262 Groom, Buddy 1997 5.15 64.7 37 263 Darling, Ron 1993 5.16 178.0 102 264 Mohler, Mike 1998 5.16 61.0 35 265 Stewart, Dave 1991 5.18 226.0 130 266 Owchinko, Bob 1982 5.21 102.0 59 267 Conroy, Tim 1984 5.23 93.0 54 268 Slusarski, Joe 1991 5.27 109.3 64 269 Welch, Bob 1993 5.29 166.7 98 270 Plunk, Eric 1986 5.31 120.3 71 271 *Oquist, Mike 1999 5.37 140.7 84 272 Slusarski, Joe 1992 5.45 76.0 46 273 Abbott, Glenn 1976 5.49 62.3 38 274 Minetto, Craig 1979 5.55 118.3 73 275 McCatty, Steve 1985 5.57 85.7 53 276 Wengert, Don 1996 5.58 161.3 100 277 Mohler, Mike 1993 5.60 64.3 40 278 Beard, Dave 1983 5.61 61.0 38 279 Downs, Kelly 1993 5.64 119.7 75 280 Wojciechowski, Steve 1996 5.65 79.7 50 281 Acre, Mark 1995 5.71 52.0 33 282 Keough, Matt 1982 5.72 209.3 133 283 Karsay, Steve 1997 5.77 132.7 85 284 *Appier, Kevin 1999 5.77 68.7 44 285 Reyes, Carlos 1997 5.82 77.3 50 286 Codiroli, Chris 1984 5.84 89.3 58 287 Rijo, Jose 1987 5.90 82.3 54 288 Show, Eric 1991 5.92 51.7 34 289 Morgan, Mike 1979 5.94 77.3 51 290 Wasdin, John 1996 5.96 131.3 87 291 Johns, Doug 1996 5.98 158.0 105 292 Wengert, Don 1997 6.04 134.0 90 293 Telgheder, Dave 1997 6.06 101.0 68 294 Andujar, Joaquin 1987 6.08 60.7 41 295 Van Poppel, Todd 1994 6.09 116.7 79 296 Chouinard, Bobby 1996 6.10 59.0 40 297 Davis, Storm 1993 6.18 62.7 43 298 Oquist, Mike 1998 6.22 175.0 121 299 Darling, Ron 1995 6.23 104.0 72 300 Harkey, Mike 1995 6.27 66.0 46 301 *Haynes, Jimmy 1999 6.34 142.0 100 302 *Candiotti, Tom 1999 6.35 56.7 40 303 Stein, Blake 1998 6.37 117.3 83 304 Nelson, Gene 1992 6.45 51.7 37 305 Todd, Jim 1979 6.56 81.0 59 306 Stewart, Dave 1995 6.89 81.0 62 307 Hillegas, Shawn 1993 6.97 60.7 47 308 Welch, Bob 1994 7.08 68.7 54 309 Langford, Rick 1986 7.36 55.0 45 310 Van Poppel, Todd 1996 7.71 63.0 54 311 Adams, Willie 1997 8.18 58.3 53
* denotes 1999 season