| 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 |
| 1971 | Washington Senators II | AL | MLB | WS2 | 18 | 21 | 5 | 9 | 3.47 | 18 | 18 | 7 | 1 | 0 | 0 | 0 | 124.2 | 104 | 57 | 48 | 10 | 53 | 89 | 10 | 4 | 10 | 1.26 | 7.51 | 0.72 | 3.83 | 6.43 | 4.11 | 1.68 |
| 1972 | Texas Rangers | AL | MLB | TEX | 18 | 22 | 5 | 12 | 4.29 | 39 | 25 | 3 | 2 | 14 | 4 | 1 | 176.1 | 153 | 93 | 84 | 14 | 85 | 133 | 14 | 0 | 13 | 1.35 | 7.81 | 0.71 | 4.34 | 6.79 | 4.75 | 1.56 |
| 1973 | Texas Rangers | AL | MLB | TEX | 18 | 23 | 5 | 9 | 5.61 | 22 | 20 | 6 | 1 | 2 | 1 | 0 | 118.2 | 130 | 77 | 74 | 8 | 66 | 57 | 5 | 1 | 5 | 1.65 | 9.86 | 0.61 | 5.01 | 4.32 | 5.84 | 0.86 |
| 1974 | Texas Rangers | AL | MLB | TEX | 40 | 24 | 0 | 4 | 8.07 | 12 | 2 | 0 | 0 | 10 | 2 | 0 | 29.0 | 29 | 29 | 26 | 7 | 13 | 15 | 2 | 0 | 1 | 1.45 | 9.00 | 2.17 | 4.03 | 4.66 | 9.00 | 1.15 |
| 1975 | Milwaukee Brewers | AL | MLB | MIL | 40 | 25 | 14 | 16 | 4.13 | 38 | 32 | 7 | 2 | 6 | 3 | 0 | 220.1 | 219 | 114 | 101 | 17 | 106 | 100 | 10 | 0 | 16 | 1.48 | 8.95 | 0.69 | 4.33 | 4.08 | 4.66 | 0.94 |
| 1976 | Milwaukee Brewers | AL | MLB | MIL | 40 | 26 | 1 | 7 | 4.97 | 20 | 11 | 1 | 0 | 9 | 3 | 0 | 92.1 | 99 | 59 | 51 | 5 | 72 | 28 | 8 | 0 | 4 | 1.85 | 9.65 | 0.49 | 7.02 | 2.73 | 5.75 | 0.39 |
| 1977 | Wichita Aeros | Amer | AAA | CHN | - | 27 | 6 | 5 | 5.38 | 13 | 13 | 4 | 1 | 0 | 0 | 0 | 87.0 | 91 | 61 | 52 | 13 | 30 | 64 | 3 | 0 | 0 | 1.39 | 9.41 | 1.34 | 3.10 | 6.62 | 6.31 | 2.13 |
| 1977 | Chicago Cubs | NL | MLB | CHN | 40 | 27 | 1 | 2 | 4.75 | 22 | 0 | 0 | 0 | 22 | 2 | 0 | 36.0 | 34 | 22 | 19 | 8 | 18 | 20 | 0 | 0 | 0 | 1.44 | 8.50 | 2.00 | 4.50 | 5.00 | 5.50 | 1.11 |
| 1978 | Oakland Athletics | AL | MLB | OAK | 40 | 28 | 10 | 12 | 4.62 | 35 | 26 | 2 | 0 | 9 | 4 | 0 | 165.2 | 174 | 101 | 85 | 16 | 65 | 94 | 1 | 0 | 3 | 1.44 | 9.45 | 0.87 | 3.53 | 5.11 | 5.49 | 1.45 |
| Tot: | MLB (8 yrs) | MLB | 41 | 71 | 4.56 | 206 | 134 | 26 | 6 | 19 | 72 | 1 | 963.0 | 942 | 552 | 488 | 85 | 478 | 536 | 50 | 5 | 52 | 1.47 | 8.80 | 0.79 | 4.47 | 5.01 | 5.16 | 1.12 | ||||
| Tot: | NL (1 yrs) | NL | 1 | 2 | 4.75 | 22 | 0 | 0 | 0 | 2 | 22 | 0 | 36.0 | 34 | 22 | 19 | 8 | 18 | 20 | 0 | 0 | 0 | 1.44 | 8.50 | 2.00 | 4.50 | 5.00 | 5.50 | 1.11 | ||||
| Tot: | AL (7 yrs) | AL | 40 | 69 | 4.55 | 184 | 134 | 26 | 6 | 17 | 50 | 1 | 927.0 | 908 | 530 | 469 | 77 | 460 | 516 | 50 | 5 | 52 | 1.48 | 8.82 | 0.75 | 4.47 | 5.01 | 5.15 | 1.12 | ||||
| Tot: | Minors (1 yrs) | Minors | 6 | 5 | 5.38 | 13 | 13 | 4 | 1 | 0 | 0 | 0 | 87.0 | 91 | 61 | 52 | 13 | 30 | 64 | 3 | 0 | 0 | 1.39 | 9.41 | 1.34 | 3.10 | 6.62 | 6.31 | 2.13 | ||||
| Tot: | AAA (1 yrs) | AAA | 6 | 5 | 5.38 | 13 | 13 | 4 | 1 | 0 | 0 | 0 | 87.0 | 91 | 61 | 52 | 13 | 30 | 64 | 3 | 0 | 0 | 1.39 | 9.41 | 1.34 | 3.10 | 6.62 | 6.31 | 2.13 | ||||
| Avg: | MLB - 162 Inning avg | MLB | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | ||||
| Avg: | Minors - 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 |
| 1971 | Washington Senators II | AL | MLB | WS2 | 18 | 21 | P | 18 | 44 | 2 | 5 | 2 | 0 | 1 | 4 | 0 | 0 | 1 | 22 | 0 | 3 | 0 | 0 | 0 | 10 | 48 | 3 | 2 | .114 | .133 | .227 | .360 | .136 | .113 | .190 | 2.08 | 45.83 | 22.00 | 44.00 | |
| 1972 | Texas Rangers | AL | MLB | TEX | 18 | 22 | P | 39 | 51 | 1 | 4 | 2 | 0 | 0 | 2 | 0 | 0 | 1 | 24 | 0 | 5 | 0 | 0 | 0 | 6 | 57 | 2 | 2 | .078 | .096 | .118 | .214 | .059 | .040 | .148 | 1.75 | 42.11 | 24.00 | 0.00 | |
| 1977 | Wichita Aeros | Amer | AAA | CHN | - | 27 | P | 14 | 33 | 6 | 8 | 3 | 0 | 2 | 8 | 0 | 0 | 0 | 10 | 1 | 2 | 0 | 0 | 0 | 17 | 36 | 5 | 3 | .242 | .265 | .515 | .780 | .273 | .273 | .286 | 0.00 | 27.78 | 0.00 | 16.50 | |
| 1977 | Chicago Cubs | NL | MLB | CHN | 40 | 27 | P | 22 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 1 | 0 | 6 | 0 | 0 | .000 | .000 | .000 | .000 | .000 | .000 | .000 | 0.00 | 33.33 | 0.00 | 0.00 | |
| Tot: | MLB (3 yrs) | MLB | 79 | 101 | 3 | 9 | 4 | 0 | 1 | 6 | 0 | 0 | 2 | 48 | 0 | 8 | 0 | 0 | 1 | 16 | 111 | 5 | 4 | .089 | .107 | .158 | .265 | .089 | .069 | .154 | 1.80 | 43.24 | 24.00 | 101.00 | ||||||
| Tot: | AL (2 yrs) | AL | 57 | 95 | 3 | 9 | 4 | 0 | 1 | 6 | 0 | 0 | 2 | 46 | 0 | 8 | 0 | 0 | 0 | 16 | 105 | 5 | 4 | .095 | .113 | .168 | .282 | .095 | .074 | .167 | 1.90 | 43.81 | 23.00 | 95.00 | ||||||
| Tot: | NL (1 yrs) | NL | 22 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 1 | 0 | 6 | 0 | 0 | .000 | .000 | .000 | .000 | .000 | .000 | .000 | 0.00 | 33.33 | ||||||||
| Tot: | Minors (1 yrs) | Minors | 14 | 33 | 6 | 8 | 3 | 0 | 2 | 8 | 0 | 0 | 0 | 10 | 1 | 2 | 0 | 0 | 0 | 17 | 36 | 5 | 3 | .242 | .265 | .515 | .780 | .273 | .273 | .286 | 0.00 | 27.78 | 16.50 | |||||||
| Tot: | AAA (1 yrs) | AAA | 14 | 33 | 6 | 8 | 3 | 0 | 2 | 8 | 0 | 0 | 0 | 10 | 1 | 2 | 0 | 0 | 0 | 17 | 36 | 5 | 3 | .242 | .265 | .515 | .780 | .273 | .273 | .286 | 0.00 | 27.78 | 16.50 | |||||||
| Avg: | MLB - 162 game avg | MLB | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | ||||||
| Avg: | Minors - 162 game avg | College | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 |
| Strikeouts | Walks | Hittable | SO/BB | vs Power | Durability | Team Success |
| 50 | 33 | 49 | 38 | 49 | 63 | .444 |