| 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 |
| 1969 | Kansas City Royals | AL | MLB | KCA | 41 | 24 | 11 | 13 | 3.77 | 41 | 26 | 10 | 2 | 15 | 10 | 1 | 200.2 | 190 | 95 | 84 | 19 | 65 | 108 | 0 | 0 | 2 | 1.27 | 8.52 | 0.85 | 2.92 | 4.84 | 4.26 | 1.66 |
| 1970 | Kansas City Royals | AL | MLB | KCA | 41 | 25 | 9 | 15 | 3.75 | 35 | 34 | 7 | 1 | 1 | 1 | 0 | 240.0 | 239 | 110 | 100 | 20 | 72 | 127 | 3 | 1 | 7 | 1.30 | 8.96 | 0.75 | 2.70 | 4.76 | 4.13 | 1.76 |
| 1971 | Kansas City Royals | AL | MLB | KCA | 41 | 26 | 17 | 11 | 2.98 | 35 | 34 | 15 | 4 | 1 | 0 | 0 | 241.1 | 251 | 84 | 80 | 14 | 46 | 109 | 4 | 0 | 9 | 1.23 | 9.36 | 0.52 | 1.72 | 4.06 | 3.13 | 2.37 |
| 1972 | Kansas City Royals | AL | MLB | KCA | 41 | 27 | 12 | 17 | 3.01 | 34 | 33 | 11 | 2 | 1 | 1 | 0 | 239.1 | 230 | 88 | 80 | 22 | 51 | 135 | 5 | 0 | 6 | 1.17 | 8.65 | 0.83 | 1.92 | 5.08 | 3.31 | 2.65 |
| 1973 | Kansas City Royals | AL | MLB | KCA | 41 | 28 | 12 | 14 | 4.23 | 37 | 33 | 10 | 1 | 4 | 2 | 0 | 212.2 | 252 | 116 | 100 | 16 | 76 | 98 | 4 | 2 | 7 | 1.54 | 10.66 | 0.68 | 3.22 | 4.15 | 4.91 | 1.29 |
| 1974 | Boston Red Sox | AL | MLB | BOS | 41 | 29 | 7 | 10 | 3.48 | 33 | 18 | 8 | 0 | 15 | 10 | 3 | 175.2 | 165 | 71 | 68 | 17 | 56 | 90 | 5 | 0 | 5 | 1.26 | 8.45 | 0.87 | 2.87 | 4.61 | 3.64 | 1.61 |
| 1975 | Boston Red Sox | AL | MLB | BOS | 41 | 30 | 2 | 2 | 3.84 | 40 | 2 | 0 | 0 | 38 | 34 | 15 | 72.2 | 69 | 31 | 31 | 5 | 31 | 43 | 1 | 0 | 0 | 1.38 | 8.55 | 0.62 | 3.84 | 5.33 | 3.84 | 1.39 |
| 1976 | California Angels | AL | MLB | CAL | 41 | 31 | 7 | 8 | 4.42 | 43 | 0 | 0 | 0 | 43 | 27 | 6 | 79.1 | 80 | 42 | 39 | 7 | 31 | 43 | 3 | 0 | 5 | 1.40 | 9.08 | 0.79 | 3.52 | 4.88 | 4.76 | 1.39 |
| 1977 | California Angels | AL | MLB | CAL | 41 | 32 | 0 | 1 | 3.00 | 13 | 0 | 0 | 0 | 13 | 6 | 2 | 21.0 | 22 | 8 | 7 | 3 | 3 | 15 | 1 | 0 | 0 | 1.19 | 9.43 | 1.29 | 1.29 | 6.43 | 3.43 | 5.00 |
| 1977 | Baltimore Orioles | AL | MLB | BAL | 37 | 32 | 6 | 3 | 3.63 | 36 | 0 | 0 | 0 | 36 | 22 | 3 | 39.2 | 49 | 19 | 16 | 2 | 15 | 20 | 0 | 0 | 1 | 1.61 | 11.12 | 0.45 | 3.40 | 4.54 | 4.31 | 1.33 |
| 1978 | Boston Red Sox | AL | MLB | BOS | 41 | 33 | 4 | 4 | 3.03 | 37 | 1 | 0 | 0 | 36 | 24 | 7 | 77.1 | 71 | 30 | 26 | 5 | 32 | 42 | 2 | 0 | 4 | 1.33 | 8.26 | 0.58 | 3.72 | 4.89 | 3.49 | 1.31 |
| 1979 | Boston Red Sox | AL | MLB | BOS | 41 | 34 | 10 | 6 | 3.03 | 53 | 1 | 0 | 0 | 52 | 37 | 13 | 89.0 | 85 | 33 | 30 | 6 | 21 | 67 | 4 | 0 | 3 | 1.19 | 8.60 | 0.61 | 2.12 | 6.78 | 3.34 | 3.19 |
| 1980 | Boston Red Sox | AL | MLB | BOS | 41 | 35 | 7 | 7 | 4.14 | 43 | 7 | 1 | 0 | 36 | 18 | 3 | 132.2 | 127 | 67 | 61 | 17 | 44 | 63 | 0 | 0 | 5 | 1.29 | 8.62 | 1.15 | 2.98 | 4.27 | 4.55 | 1.43 |
| 1981 | Seattle Mariners | AL | MLB | SEA | 28 | 36 | 4 | 6 | 5.53 | 39 | 0 | 0 | 0 | 39 | 24 | 5 | 53.2 | 71 | 33 | 33 | 4 | 15 | 27 | 2 | 0 | 0 | 1.60 | 11.91 | 0.67 | 2.52 | 4.53 | 5.53 | 1.80 |
| Tot: | MLB (13 yrs) | MLB | 108 | 117 | 3.62 | 519 | 189 | 62 | 10 | 216 | 330 | 58 | 1875.0 | 1901 | 827 | 755 | 157 | 558 | 987 | 34 | 3 | 54 | 1.31 | 9.12 | 0.75 | 2.68 | 4.74 | 3.97 | 1.77 | ||||
| Tot: | AL (13 yrs) | AL | 108 | 117 | 3.62 | 519 | 189 | 62 | 10 | 216 | 330 | 58 | 1875.0 | 1901 | 827 | 755 | 157 | 558 | 987 | 34 | 3 | 54 | 1.31 | 9.12 | 0.75 | 2.68 | 4.74 | 3.97 | 1.77 | ||||
| Avg: | MLB - 162 Inning avg | MLB | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 |
| year | team name | league | category | 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 |
| 1975 | Boston Red Sox | Championship Series | Playoffs | 30 | 0 | 0 | 0.00 | 2 | 0 | 0 | 0 | 0 | 0 | 2 | 4.2 | 2 | 0 | 0 | 0 | 1 | 2 | 0 | 0 | 0 | 0.64 | 3.86 | 0.00 | 1.93 | 3.86 | 0.00 | 2.00 |
| 1975 | Boston Red Sox | World Series | Playoffs | 30 | 0 | 1 | 2.25 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 4.0 | 3 | 0 | 1 | 0 | 1 | 1 | 0 | 0 | 0 | 1.00 | 6.75 | 0.00 | 2.25 | 2.25 | 0.00 | 1.00 |
| Tot: | Playoffs (1 Yrs) | Playoffs | 0 | 1 | 1.04 | 4 | 0 | 0 | 0 | 0 | 4 | 2 | 8.2 | 5 | 0 | 1 | 0 | 2 | 3 | 0 | 0 | 0 | 0.81 | 5.19 | 0.00 | 2.08 | 3.12 | 0.00 | 1.50 |
| 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 | Kansas City Royals | AL | MLB | KCA | 41 | 24 | P | 41 | 52 | 2 | 3 | 1 | 0 | 0 | 2 | 0 | 0 | 3 | 25 | 0 | 9 | 0 | 0 | 0 | 4 | 64 | 1 | 2 | .058 | .109 | .077 | .186 | .077 | .019 | .111 | 4.69 | 39.06 | 8.33 | 0.00 | |
| 1970 | Kansas City Royals | AL | MLB | KCA | 41 | 25 | P | 35 | 76 | 2 | 4 | 0 | 0 | 0 | 1 | 0 | 0 | 2 | 44 | 0 | 9 | 0 | 0 | 0 | 4 | 87 | 0 | 4 | .053 | .077 | .053 | .130 | .026 | .000 | .125 | 2.30 | 50.57 | 22.00 | 0.00 | |
| 1971 | Kansas City Royals | AL | MLB | KCA | 41 | 26 | P | 35 | 77 | 3 | 10 | 3 | 0 | 0 | 4 | 0 | 0 | 8 | 44 | 0 | 7 | 0 | 0 | 1 | 13 | 92 | 3 | 7 | .130 | .212 | .169 | .381 | .143 | .039 | .303 | 8.70 | 47.83 | 5.50 | 0.00 | |
| 1972 | Kansas City Royals | AL | MLB | KCA | 41 | 27 | P | 35 | 68 | 4 | 4 | 0 | 0 | 0 | 5 | 0 | 0 | 8 | 36 | 1 | 7 | 0 | 0 | 0 | 4 | 84 | 0 | 4 | .059 | .169 | .059 | .228 | .118 | .000 | .125 | 9.52 | 42.86 | 4.50 | 0.00 | |
| 1980 | Boston Red Sox | AL | MLB | BOS | 41 | 35 | P | 43 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | .000 | .000 | .000 | .000 | .000 | .000 | .000 | 0.00 | 0.00 | 0.00 | 0.00 | |
| Tot: | MLB (5 yrs) | MLB | 189 | 274 | 11 | 21 | 4 | 0 | 0 | 12 | 0 | 0 | 21 | 149 | 1 | 32 | 0 | 0 | 1 | 25 | 328 | 4 | 17 | .077 | .145 | .091 | .237 | .091 | .015 | .168 | 6.40 | 45.43 | 7.10 | |||||||
| Tot: | AL (5 yrs) | AL | 189 | 274 | 11 | 21 | 4 | 0 | 0 | 12 | 0 | 0 | 21 | 149 | 1 | 32 | 0 | 0 | 1 | 25 | 328 | 4 | 17 | .077 | .145 | .091 | .237 | .091 | .015 | .168 | 6.40 | 45.43 | 7.10 | |||||||
| Avg: | MLB - 162 game avg | MLB | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 |
| Strikeouts | Walks | Hittable | SO/BB | vs Power | Durability | Team Success |
| 46 | 70 | 43 | 65 | 43 | 90 | .512 |