| 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 | San Francisco Giants | NL | MLB | SFN | 32 | 25 | 0 | 2 | 16.50 | 4 | 2 | 0 | 0 | 2 | 0 | 0 | 6.0 | 13 | 11 | 11 | 0 | 6 | 5 | 0 | 0 | 0 | 3.17 | 19.50 | 0.00 | 9.00 | 7.50 | 16.50 | 0.83 |
| 1966 | Chicago Cubs | NL | MLB | CHN | 49 | 26 | 8 | 13 | 4.58 | 41 | 26 | 0 | 0 | 15 | 10 | 2 | 159.0 | 168 | 91 | 81 | 17 | 59 | 93 | 4 | 2 | 5 | 1.43 | 9.51 | 0.96 | 3.34 | 5.26 | 5.15 | 1.58 |
| 1967 | Chicago Cubs | NL | MLB | CHN | 49 | 27 | 7 | 8 | 2.46 | 49 | 11 | 3 | 1 | 38 | 21 | 6 | 150.0 | 134 | 46 | 41 | 9 | 48 | 84 | 4 | 0 | 2 | 1.21 | 8.04 | 0.54 | 2.88 | 5.04 | 2.76 | 1.75 |
| 1968 | Chicago Cubs | NL | MLB | CHN | 49 | 28 | 16 | 10 | 2.89 | 38 | 34 | 11 | 4 | 4 | 0 | 0 | 258.2 | 221 | 91 | 83 | 26 | 36 | 148 | 4 | 0 | 6 | 0.99 | 7.69 | 0.90 | 1.25 | 5.15 | 3.17 | 4.11 |
| 1969 | Chicago Cubs | NL | MLB | CHN | 49 | 29 | 20 | 14 | 2.49 | 41 | 41 | 18 | 3 | 0 | 0 | 0 | 300.0 | 268 | 102 | 83 | 21 | 73 | 181 | 5 | 0 | 6 | 1.14 | 8.04 | 0.63 | 2.19 | 5.43 | 3.06 | 2.48 |
| 1970 | Chicago Cubs | NL | MLB | CHN | 49 | 30 | 18 | 15 | 3.70 | 39 | 38 | 12 | 2 | 1 | 1 | 1 | 265.0 | 278 | 121 | 109 | 20 | 76 | 170 | 9 | 1 | 4 | 1.34 | 9.44 | 0.68 | 2.58 | 5.77 | 4.11 | 2.24 |
| 1971 | Chicago Cubs | NL | MLB | CHN | 49 | 31 | 12 | 18 | 3.42 | 36 | 35 | 14 | 1 | 1 | 1 | 0 | 242.1 | 248 | 112 | 92 | 27 | 50 | 128 | 5 | 0 | 2 | 1.23 | 9.21 | 1.00 | 1.86 | 4.75 | 4.16 | 2.56 |
| 1972 | Chicago Cubs | NL | MLB | CHN | 49 | 32 | 11 | 8 | 3.00 | 32 | 28 | 6 | 3 | 4 | 3 | 0 | 189.0 | 168 | 73 | 63 | 12 | 47 | 96 | 1 | 1 | 2 | 1.14 | 8.00 | 0.57 | 2.24 | 4.57 | 3.48 | 2.04 |
| 1973 | Minnesota Twins | AL | MLB | MIN | 17 | 33 | 7 | 10 | 3.49 | 39 | 15 | 3 | 1 | 24 | 17 | 2 | 142.0 | 138 | 69 | 55 | 14 | 41 | 78 | 5 | 0 | 2 | 1.26 | 8.75 | 0.89 | 2.60 | 4.94 | 4.37 | 1.90 |
| 1974 | Minnesota Twins | AL | MLB | MIN | 49 | 34 | 4 | 5 | 4.45 | 35 | 10 | 0 | 0 | 25 | 16 | 3 | 115.1 | 130 | 57 | 57 | 9 | 25 | 74 | 2 | 1 | 4 | 1.34 | 10.14 | 0.70 | 1.95 | 5.77 | 4.45 | 2.96 |
| 1974 | Texas Rangers | AL | MLB | TEX | 34 | 34 | 2 | 0 | 1.93 | 2 | 2 | 1 | 1 | 0 | 0 | 0 | 14.0 | 11 | 3 | 3 | 0 | 3 | 4 | 0 | 0 | 0 | 1.00 | 7.07 | 0.00 | 1.93 | 2.57 | 1.93 | 1.33 |
| 1975 | Texas Rangers | AL | MLB | TEX | 49 | 35 | 6 | 7 | 4.02 | 18 | 18 | 4 | 1 | 0 | 0 | 0 | 109.2 | 118 | 58 | 49 | 12 | 28 | 67 | 7 | 0 | 3 | 1.33 | 9.68 | 0.98 | 2.30 | 5.50 | 4.76 | 2.39 |
| Tot: | MLB (11 yrs) | MLB | 111 | 110 | 3.35 | 374 | 260 | 72 | 17 | 69 | 114 | 14 | 1951.0 | 1895 | 834 | 727 | 167 | 492 | 1128 | 46 | 5 | 36 | 1.22 | 8.74 | 0.77 | 2.27 | 5.20 | 3.85 | 2.29 | ||||
| Tot: | NL (8 yrs) | NL | 92 | 88 | 3.23 | 280 | 215 | 64 | 14 | 36 | 65 | 9 | 1570.0 | 1498 | 647 | 563 | 132 | 395 | 905 | 32 | 4 | 27 | 1.21 | 8.59 | 0.76 | 2.26 | 5.19 | 3.71 | 2.29 | ||||
| Tot: | AL (3 yrs) | AL | 19 | 22 | 3.87 | 94 | 45 | 8 | 3 | 33 | 49 | 5 | 381.0 | 397 | 187 | 164 | 35 | 97 | 223 | 14 | 1 | 9 | 1.30 | 9.38 | 0.83 | 2.29 | 5.27 | 4.42 | 2.30 | ||||
| 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 |
| 1965 | San Francisco Giants | NL | MLB | SFN | 32 | 25 | P | 4 | 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 | |
| 1966 | Chicago Cubs | NL | MLB | CHN | 49 | 26 | P | 41 | 49 | 2 | 2 | 1 | 0 | 0 | 1 | 0 | 0 | 3 | 23 | 0 | 4 | 0 | 0 | 0 | 3 | 56 | 1 | 1 | .041 | .096 | .061 | .157 | .082 | .020 | .077 | 5.36 | 41.07 | 7.67 | 0.00 | |
| 1967 | Chicago Cubs | NL | MLB | CHN | 49 | 27 | P | 49 | 38 | 0 | 4 | 0 | 0 | 0 | 3 | 0 | 0 | 3 | 26 | 0 | 4 | 0 | 0 | 0 | 4 | 45 | 0 | 4 | .105 | .171 | .105 | .276 | .079 | .000 | .333 | 6.67 | 57.78 | 8.67 | 0.00 | |
| 1968 | Chicago Cubs | NL | MLB | CHN | 49 | 28 | P | 38 | 82 | 2 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 50 | 0 | 7 | 0 | 0 | 0 | 5 | 92 | 0 | 5 | .061 | .094 | .061 | .155 | .037 | .000 | .156 | 3.26 | 54.35 | 16.67 | 0.00 | |
| 1969 | Chicago Cubs | NL | MLB | CHN | 49 | 29 | P | 41 | 98 | 5 | 9 | 0 | 0 | 0 | 3 | 0 | 0 | 4 | 45 | 1 | 11 | 0 | 0 | 0 | 9 | 114 | 0 | 9 | .092 | .136 | .092 | .228 | .041 | .000 | .170 | 3.51 | 39.47 | 11.25 | 0.00 | |
| 1970 | Chicago Cubs | NL | MLB | CHN | 49 | 30 | P | 39 | 75 | 6 | 10 | 2 | 0 | 0 | 6 | 0 | 0 | 15 | 33 | 0 | 9 | 2 | 0 | 0 | 12 | 101 | 2 | 8 | .133 | .272 | .160 | .432 | .227 | .027 | .227 | 14.85 | 32.67 | 2.20 | 0.00 | |
| 1971 | Chicago Cubs | NL | MLB | CHN | 49 | 31 | P | 36 | 72 | 3 | 6 | 3 | 0 | 0 | 6 | 0 | 0 | 6 | 42 | 0 | 9 | 0 | 0 | 0 | 9 | 87 | 3 | 3 | .083 | .154 | .125 | .279 | .125 | .042 | .200 | 6.90 | 48.28 | 7.00 | 0.00 | |
| 1972 | Chicago Cubs | NL | MLB | CHN | 49 | 32 | P | 32 | 57 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 30 | 0 | 4 | 0 | 0 | 2 | 1 | 66 | 0 | 1 | .018 | .097 | .018 | .115 | .088 | .000 | .037 | 7.58 | 45.45 | 6.00 | 0.00 | |
| Tot: | MLB (8 yrs) | MLB | 280 | 472 | 19 | 37 | 6 | 0 | 0 | 19 | 0 | 0 | 39 | 249 | 1 | 48 | 2 | 0 | 2 | 43 | 562 | 6 | 31 | .078 | .150 | .091 | .241 | .095 | .013 | .164 | 6.94 | 44.31 | 6.38 | |||||||
| Tot: | NL (8 yrs) | NL | 280 | 472 | 19 | 37 | 6 | 0 | 0 | 19 | 0 | 0 | 39 | 249 | 1 | 48 | 2 | 0 | 2 | 43 | 562 | 6 | 31 | .078 | .150 | .091 | .241 | .095 | .013 | .164 | 6.94 | 44.31 | 6.38 | |||||||
| Avg: | MLB - 162 game avg | MLB | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 |
| Strikeouts | Walks | Hittable | SO/BB | vs Power | Durability | Team Success |
| 45 | 82 | 44 | 77 | 44 | 84 | .514 |