| 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 | Chicago Cubs | NL | MLB | CHN | 48 | 23 | 1 | 0 | 3.07 | 6 | 2 | 0 | 0 | 4 | 1 | 0 | 14.2 | 15 | 6 | 5 | 2 | 9 | 4 | 0 | 1 | 1 | 1.64 | 9.20 | 1.23 | 5.52 | 2.45 | 3.68 | 0.44 |
| 1970 | Chicago Cubs | NL | MLB | CHN | 48 | 24 | 3 | 1 | 3.59 | 34 | 5 | 0 | 0 | 29 | 11 | 4 | 72.2 | 88 | 37 | 29 | 3 | 23 | 50 | 1 | 1 | 1 | 1.53 | 10.90 | 0.37 | 2.85 | 6.19 | 4.58 | 2.17 |
| 1971 | Chicago Cubs | NL | MLB | CHN | 48 | 25 | 0 | 1 | 6.97 | 14 | 0 | 0 | 0 | 14 | 5 | 0 | 10.1 | 18 | 8 | 8 | 1 | 3 | 2 | 0 | 0 | 0 | 2.03 | 15.68 | 0.87 | 2.61 | 1.74 | 6.97 | 0.67 |
| 1972 | Milwaukee Brewers | AL | MLB | MIL | 48 | 26 | 7 | 7 | 3.11 | 39 | 12 | 4 | 1 | 27 | 7 | 0 | 147.2 | 135 | 53 | 51 | 14 | 43 | 97 | 5 | 0 | 2 | 1.21 | 8.23 | 0.85 | 2.62 | 5.91 | 3.23 | 2.26 |
| 1973 | Milwaukee Brewers | AL | MLB | MIL | 48 | 27 | 20 | 12 | 3.18 | 43 | 36 | 22 | 4 | 7 | 2 | 1 | 314.1 | 297 | 133 | 111 | 21 | 87 | 135 | 6 | 1 | 3 | 1.22 | 8.50 | 0.60 | 2.49 | 3.87 | 3.81 | 1.55 |
| 1974 | Milwaukee Brewers | AL | MLB | MIL | 48 | 28 | 10 | 13 | 4.06 | 33 | 31 | 10 | 1 | 2 | 2 | 0 | 224.0 | 230 | 104 | 101 | 27 | 60 | 83 | 3 | 0 | 6 | 1.29 | 9.24 | 1.08 | 2.41 | 3.33 | 4.18 | 1.38 |
| 1975 | Milwaukee Brewers | AL | MLB | MIL | 48 | 29 | 11 | 13 | 4.27 | 36 | 29 | 8 | 1 | 7 | 3 | 2 | 206.1 | 215 | 111 | 98 | 18 | 65 | 79 | 5 | 0 | 5 | 1.36 | 9.38 | 0.79 | 2.84 | 3.45 | 4.84 | 1.22 |
| 1976 | Milwaukee Brewers | AL | MLB | MIL | 48 | 30 | 9 | 15 | 3.71 | 32 | 32 | 7 | 0 | 0 | 0 | 0 | 225.2 | 232 | 97 | 93 | 20 | 54 | 101 | 6 | 2 | 2 | 1.27 | 9.25 | 0.80 | 2.15 | 4.03 | 3.87 | 1.87 |
| 1977 | Kansas City Royals | AL | MLB | KCA | 48 | 31 | 18 | 14 | 3.62 | 36 | 35 | 6 | 1 | 1 | 0 | 0 | 239.0 | 233 | 106 | 96 | 22 | 81 | 103 | 8 | 3 | 13 | 1.31 | 8.77 | 0.83 | 3.05 | 3.88 | 3.99 | 1.27 |
| 1978 | Kansas City Royals | AL | MLB | KCA | 48 | 32 | 1 | 2 | 4.76 | 8 | 3 | 0 | 0 | 5 | 1 | 0 | 28.1 | 31 | 18 | 15 | 4 | 12 | 8 | 0 | 0 | 2 | 1.52 | 9.85 | 1.27 | 3.81 | 2.54 | 5.72 | 0.67 |
| 1978 | Seattle Mariners | AL | MLB | SEA | 48 | 32 | 3 | 10 | 5.35 | 20 | 19 | 3 | 0 | 1 | 0 | 0 | 114.1 | 125 | 77 | 68 | 21 | 38 | 26 | 2 | 1 | 6 | 1.43 | 9.84 | 1.65 | 2.99 | 2.05 | 6.06 | 0.68 |
| Tot: | MLB (10 yrs) | MLB | 83 | 88 | 3.80 | 301 | 204 | 60 | 8 | 32 | 97 | 7 | 1597.1 | 1619 | 750 | 675 | 153 | 475 | 688 | 36 | 9 | 41 | 1.31 | 9.12 | 0.86 | 2.68 | 3.88 | 4.23 | 1.45 | ||||
| Tot: | AL (7 yrs) | AL | 79 | 86 | 3.80 | 247 | 197 | 60 | 8 | 15 | 50 | 3 | 1499.2 | 1498 | 699 | 633 | 147 | 440 | 632 | 35 | 7 | 39 | 1.29 | 8.99 | 0.88 | 2.64 | 3.79 | 4.19 | 1.44 | ||||
| Tot: | NL (3 yrs) | NL | 4 | 2 | 3.87 | 54 | 7 | 0 | 0 | 17 | 47 | 4 | 97.2 | 121 | 51 | 42 | 6 | 35 | 56 | 1 | 2 | 2 | 1.60 | 11.15 | 0.55 | 3.23 | 5.16 | 4.70 | 1.60 | ||||
| Avg: | MLB - 162 Inning avg | MLB | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 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 | Chicago Cubs | NL | MLB | CHN | 48 | 23 | P | 6 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | .000 | .000 | .000 | .000 | .000 | .000 | .000 | 0.00 | 66.67 | 0.00 | 0.00 | |
| 1970 | Chicago Cubs | NL | MLB | CHN | 48 | 24 | P | 34 | 15 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 11 | 0 | 1 | 0 | 0 | 0 | 1 | 17 | 0 | 1 | .067 | .125 | .067 | .192 | .067 | .000 | .250 | 5.88 | 64.71 | 11.00 | 0.00 | |
| 1972 | Milwaukee Brewers | AL | MLB | MIL | 48 | 26 | P | 39 | 37 | 0 | 3 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 17 | 0 | 2 | 0 | 0 | 0 | 5 | 40 | 1 | 2 | .081 | .105 | .135 | .240 | .081 | .054 | .150 | 2.50 | 42.50 | 17.00 | 0.00 | |
| Tot: | MLB (3 yrs) | MLB | 79 | 55 | 0 | 4 | 0 | 1 | 0 | 1 | 0 | 0 | 2 | 30 | 0 | 3 | 0 | 0 | 0 | 6 | 60 | 1 | 3 | .073 | .105 | .109 | .214 | .073 | .036 | .160 | 3.33 | 50.00 | 15.00 | |||||||
| Tot: | AL (1 yrs) | AL | 39 | 37 | 0 | 3 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 17 | 0 | 2 | 0 | 0 | 0 | 5 | 40 | 1 | 2 | .081 | .105 | .135 | .240 | .081 | .054 | .150 | 2.50 | 42.50 | 17.00 | |||||||
| Tot: | NL (2 yrs) | NL | 40 | 18 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 13 | 0 | 1 | 0 | 0 | 0 | 1 | 20 | 0 | 1 | .056 | .105 | .056 | .161 | .056 | .000 | .200 | 5.00 | 65.00 | 13.00 | |||||||
| Avg: | MLB - 162 game avg | MLB | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 |
| Strikeouts | Walks | Hittable | SO/BB | vs Power | Durability | Team Success |
| 28 | 77 | 40 | 54 | 40 | 75 | .484 |