| year | team name | league | level | mlb | # | age | w | l | era | g | gs | cg | sho | gr | gf | sv | ip | h | r | er | hr | bb | so | wp | bk | hb | whip | h9 | hr9 | bb9 | so9 | ra9 | so/bb |
| 1965 | Kansas | Big8 | NCAA-1 | 20 | 3 | 3 | 3.88 | 8 | 6 | 2 | 0 | 2 | 0 | 0 | 46.1 | 39 | 32 | 20 | 0 | 43 | 75 | 0 | 0 | 0 | 1.77 | 7.58 | 0.00 | 8.35 | 14.57 | 6.22 | 1.74 | ||
| 1969 | Montreal Expos | NL | MLB | MON | 18 | 24 | 6 | 7 | 4.01 | 18 | 15 | 4 | 0 | 3 | 2 | 0 | 103.1 | 94 | 54 | 46 | 14 | 50 | 68 | 4 | 0 | 2 | 1.39 | 8.19 | 1.22 | 4.35 | 5.92 | 4.70 | 1.36 |
| 1970 | Montreal Expos | NL | MLB | MON | 18 | 25 | 13 | 11 | 4.32 | 41 | 33 | 7 | 1 | 8 | 4 | 1 | 222.2 | 203 | 121 | 107 | 27 | 104 | 142 | 3 | 0 | 6 | 1.38 | 8.21 | 1.09 | 4.20 | 5.74 | 4.89 | 1.37 |
| 1971 | Montreal Expos | NL | MLB | MON | 18 | 26 | 15 | 14 | 3.75 | 40 | 37 | 9 | 3 | 3 | 2 | 0 | 275.2 | 256 | 128 | 115 | 24 | 135 | 129 | 11 | 0 | 3 | 1.42 | 8.36 | 0.78 | 4.41 | 4.21 | 4.18 | 0.96 |
| 1972 | Montreal Expos | NL | MLB | MON | 18 | 27 | 1 | 10 | 5.20 | 30 | 12 | 0 | 0 | 18 | 6 | 0 | 97.0 | 96 | 60 | 56 | 11 | 67 | 66 | 4 | 0 | 0 | 1.68 | 8.91 | 1.02 | 6.22 | 6.12 | 5.57 | 0.99 |
| 1973 | Montreal Expos | NL | MLB | MON | 18 | 28 | 15 | 11 | 2.81 | 36 | 34 | 9 | 0 | 2 | 1 | 1 | 249.2 | 201 | 94 | 78 | 26 | 108 | 164 | 9 | 0 | 1 | 1.24 | 7.25 | 0.94 | 3.89 | 5.91 | 3.39 | 1.52 |
| 1974 | Montreal Expos | NL | MLB | MON | 18 | 29 | 12 | 16 | 4.03 | 37 | 35 | 8 | 1 | 2 | 1 | 0 | 227.2 | 222 | 115 | 102 | 17 | 81 | 138 | 19 | 1 | 0 | 1.33 | 8.78 | 0.67 | 3.20 | 5.46 | 4.55 | 1.70 |
| 1975 | Montreal Expos | NL | MLB | MON | 18 | 30 | 6 | 12 | 4.07 | 31 | 25 | 3 | 1 | 6 | 1 | 1 | 170.1 | 175 | 89 | 77 | 20 | 76 | 99 | 8 | 1 | 1 | 1.47 | 9.25 | 1.06 | 4.02 | 5.23 | 4.70 | 1.30 |
| 1976 | Montreal Expos | NL | MLB | MON | 18 | 31 | 0 | 1 | 5.54 | 5 | 1 | 0 | 0 | 4 | 1 | 0 | 13.0 | 15 | 8 | 8 | 2 | 3 | 4 | 0 | 0 | 0 | 1.38 | 10.38 | 1.38 | 2.08 | 2.77 | 5.54 | 1.33 |
| 1976 | Chicago Cubs | NL | MLB | CHN | 50 | 31 | 8 | 11 | 3.86 | 28 | 27 | 4 | 1 | 1 | 0 | 0 | 163.1 | 164 | 79 | 70 | 12 | 43 | 112 | 1 | 0 | 0 | 1.27 | 9.04 | 0.66 | 2.37 | 6.17 | 4.35 | 2.60 |
| 1977 | Chicago Cubs | NL | MLB | CHN | 50 | 32 | 2 | 2 | 4.56 | 13 | 8 | 0 | 0 | 5 | 2 | 1 | 51.1 | 51 | 32 | 26 | 10 | 21 | 34 | 1 | 0 | 1 | 1.40 | 8.94 | 1.75 | 3.68 | 5.96 | 5.61 | 1.62 |
| 1977 | Chicago White Sox | AL | MLB | CHA | 50 | 32 | 5 | 0 | 3.54 | 8 | 8 | 0 | 0 | 0 | 0 | 0 | 53.1 | 55 | 23 | 21 | 3 | 17 | 36 | 0 | 0 | 1 | 1.35 | 9.28 | 0.51 | 2.87 | 6.08 | 3.88 | 2.12 |
| 1978 | Oakland Athletics | AL | MLB | OAK | 28 | 33 | 6 | 12 | 4.29 | 27 | 25 | 3 | 1 | 2 | 2 | 0 | 151.0 | 152 | 77 | 72 | 10 | 67 | 89 | 1 | 1 | 2 | 1.45 | 9.06 | 0.60 | 3.99 | 5.30 | 4.59 | 1.33 |
| 1979 | Boston Red Sox | AL | MLB | BOS | 25 | 34 | 11 | 9 | 4.11 | 27 | 27 | 4 | 1 | 0 | 0 | 0 | 171.0 | 174 | 86 | 78 | 22 | 53 | 99 | 3 | 0 | 2 | 1.33 | 9.16 | 1.16 | 2.79 | 5.21 | 4.53 | 1.87 |
| 1980 | Boston Red Sox | AL | MLB | BOS | 25 | 35 | 9 | 9 | 4.19 | 32 | 23 | 1 | 0 | 9 | 3 | 0 | 165.1 | 180 | 86 | 77 | 17 | 56 | 90 | 2 | 1 | 1 | 1.43 | 9.80 | 0.93 | 3.05 | 4.90 | 4.68 | 1.61 |
| 1981 | California Angels | AL | MLB | CAL | 45 | 36 | 8 | 4 | 3.44 | 22 | 15 | 0 | 0 | 7 | 5 | 1 | 102.0 | 93 | 40 | 39 | 7 | 42 | 50 | 0 | 0 | 1 | 1.32 | 8.21 | 0.62 | 3.71 | 4.41 | 3.53 | 1.19 |
| 1982 | California Angels | AL | MLB | CAL | 45 | 37 | 11 | 6 | 4.44 | 31 | 23 | 4 | 0 | 8 | 4 | 0 | 156.0 | 163 | 78 | 77 | 17 | 51 | 81 | 3 | 0 | 1 | 1.37 | 9.40 | 0.98 | 2.94 | 4.67 | 4.50 | 1.59 |
| 1983 | Kansas City Royals | AL | MLB | KCA | 18 | 38 | 6 | 11 | 4.30 | 25 | 17 | 1 | 0 | 8 | 2 | 1 | 121.1 | 144 | 63 | 58 | 9 | 36 | 54 | 4 | 0 | 0 | 1.48 | 10.68 | 0.67 | 2.67 | 4.01 | 4.67 | 1.50 |
| Tot: | MLB (15 yrs) | MLB | 134 | 146 | 3.99 | 451 | 365 | 57 | 9 | 36 | 86 | 6 | 2494.0 | 2438 | 1233 | 1107 | 248 | 1010 | 1455 | 73 | 4 | 22 | 1.38 | 8.80 | 0.89 | 3.64 | 5.25 | 4.45 | 1.44 | ||||
| Tot: | NL (9 yrs) | NL | 78 | 95 | 3.92 | 279 | 227 | 44 | 7 | 20 | 52 | 4 | 1574.0 | 1477 | 780 | 685 | 163 | 688 | 956 | 60 | 2 | 14 | 1.38 | 8.45 | 0.93 | 3.93 | 5.47 | 4.46 | 1.39 | ||||
| Tot: | AL (7 yrs) | AL | 56 | 51 | 4.13 | 172 | 138 | 13 | 2 | 16 | 34 | 2 | 920.0 | 961 | 453 | 422 | 85 | 322 | 499 | 13 | 2 | 8 | 1.39 | 9.40 | 0.83 | 3.15 | 4.88 | 4.43 | 1.55 | ||||
| Tot: | College (1 yrs) | College | 3 | 3 | 3.88 | 8 | 6 | 2 | 0 | 0 | 2 | 0 | 46.1 | 39 | 32 | 20 | 0 | 43 | 75 | 0 | 0 | 0 | 1.77 | 7.58 | 0.00 | 8.35 | 14.57 | 6.22 | 1.74 | ||||
| Avg: | MLB - 162 Inning avg | MLB | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | ||||
| Avg: | College - 162 Inning avg | College | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 |
| year | team name | league | level | mlb | # | age | pos | tbc+ | g | ab | r | h | 2b | 3b | hr | rbi | sb | cs | bb | so | hbp | sh | sf | ibb | gdp | tb | pa | xbh | 1b | avg | obp | slg | ops | seca | iso | babip | bb% | so% | so/bb | ab/hr |
| 1969 | Montreal Expos | NL | MLB | MON | 18 | 24 | P | 18 | 36 | 4 | 6 | 0 | 0 | 1 | 3 | 0 | 0 | 1 | 14 | 0 | 2 | 0 | 0 | 2 | 9 | 39 | 1 | 5 | .167 | .189 | .250 | .439 | .111 | .083 | .238 | 2.56 | 35.90 | 14.00 | 36.00 | |
| 1970 | Montreal Expos | NL | MLB | MON | 18 | 25 | P | 41 | 80 | 8 | 16 | 3 | 0 | 1 | 6 | 0 | 0 | 2 | 18 | 0 | 3 | 0 | 0 | 1 | 22 | 85 | 4 | 12 | .200 | .220 | .275 | .495 | .100 | .075 | .246 | 2.35 | 21.18 | 9.00 | 80.00 | |
| 1971 | Montreal Expos | NL | MLB | MON | 18 | 26 | P | 80* | 41 | 100 | 9 | 21 | 5 | 0 | 2 | 12 | 0 | 0 | 2 | 21 | 0 | 4 | 0 | 0 | 3 | 32 | 106 | 7 | 14 | .210 | .225 | .320 | .545 | .130 | .110 | .247 | 1.89 | 19.81 | 10.50 | 50.00 |
| 1972 | Montreal Expos | NL | MLB | MON | 18 | 27 | P | 32 | 24 | 0 | 7 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 7 | 24 | 0 | 7 | .292 | .292 | .292 | .584 | .000 | .000 | .368 | 0.00 | 20.83 | 0.00 | 0.00 | |
| 1973 | Montreal Expos | NL | MLB | MON | 18 | 28 | P | 41 | 88 | 7 | 24 | 6 | 0 | 0 | 9 | 2 | 0 | 8 | 23 | 0 | 4 | 0 | 0 | 1 | 30 | 100 | 6 | 18 | .273 | .333 | .341 | .674 | .182 | .068 | .369 | 8.00 | 23.00 | 2.88 | 0.00 | |
| 1974 | Montreal Expos | NL | MLB | MON | 18 | 29 | P | 37 | 81 | 8 | 17 | 1 | 2 | 1 | 4 | 0 | 0 | 5 | 21 | 0 | 2 | 0 | 0 | 2 | 25 | 88 | 4 | 13 | .210 | .256 | .309 | .565 | .160 | .099 | .271 | 5.68 | 23.86 | 4.20 | 81.00 | |
| 1975 | Montreal Expos | NL | MLB | MON | 18 | 30 | P | 33 | 54 | 5 | 15 | 1 | 0 | 1 | 7 | 1 | 0 | 5 | 13 | 0 | 5 | 0 | 0 | 0 | 19 | 64 | 2 | 13 | .278 | .339 | .352 | .691 | .185 | .074 | .350 | 7.81 | 20.31 | 2.60 | 54.00 | |
| 1976 | Montreal Expos | NL | MLB | MON | 18 | 31 | P | 5 | 3 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 3 | 0 | 1 | .333 | .333 | .333 | .666 | .000 | .000 | .500 | 0.00 | 33.33 | 0.00 | 0.00 | |
| 1976 | Chicago Cubs | NL | MLB | CHN | 50 | 31 | P | 29 | 53 | 3 | 5 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 16 | 0 | 4 | 0 | 0 | 3 | 5 | 57 | 0 | 5 | .094 | .094 | .094 | .188 | .000 | .000 | .135 | 0.00 | 28.07 | 0.00 | 0.00 | |
| 1977 | Chicago Cubs | NL | MLB | CHN | 50 | 32 | P | 13 | 12 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 7 | 0 | 0 | 0 | 0 | 0 | 2 | 14 | 0 | 2 | .167 | .286 | .167 | .453 | .167 | .000 | .400 | 14.29 | 50.00 | 3.50 | 0.00 | |
| Tot: | MLB (9 yrs) | MLB | 290 | 531 | 44 | 114 | 16 | 2 | 6 | 42 | 3 | 0 | 25 | 139 | 0 | 24 | 0 | 0 | 12 | 152 | 580 | 24 | 90 | .215 | .250 | .286 | .536 | .124 | .072 | .280 | 4.31 | 23.97 | 5.56 | 88.50 | ||||||
| Tot: | NL (9 yrs) | NL | 290 | 531 | 44 | 114 | 16 | 2 | 6 | 42 | 3 | 0 | 25 | 139 | 0 | 24 | 0 | 0 | 12 | 152 | 580 | 24 | 90 | .215 | .250 | .286 | .536 | .124 | .072 | .280 | 4.31 | 23.97 | 5.56 | 88.50 | ||||||
| Avg: | MLB - 162 game avg | MLB | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 |
| Strikeouts | Walks | Hittable | SO/BB | vs Power | Durability | Team Success |
| 61 | 42 | 49 | 48 | 49 | 71 | .466 |