| 1990 | Seibu | Jap Pac | Intl | | - | 21 | 7 | 4 | 1.84 | 43 | 0 | 0 | 0 | 0 | 0 | 8 | 102.2 | 70 | 25 | 21 | 4 | 40 | 123 | 0 | 0 | 0 | 1.07 | 6.14 | 0.35 | 3.51 | 10.78 | 2.19 | 3.08 |
| 1991 | Seibu | Jap Pac | Intl | | - | 22 | 10 | 3 | 4.48 | 45 | 0 | 1 | 0 | 0 | 0 | 5 | 92.1 | 90 | 47 | 46 | 12 | 30 | 60 | 0 | 0 | 0 | 1.30 | 8.77 | 1.17 | 2.92 | 5.85 | 4.58 | 2.00 |
| 1992 | Seibu | Jap Pac | Intl | | - | 23 | 6 | 2 | 0.00 | 47 | 0 | 0 | 0 | 0 | 0 | 10 | 107.0 | 89 | 27 | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 0.87 | 7.49 | 0.00 | 0.34 | 0.00 | 2.27 | 0.00 |
| 1993 | Seibu | Jap Pac | Intl | | - | 24 | 6 | 3 | 1.18 | 53 | 0 | 0 | 0 | 0 | 0 | 8 | 83.2 | 63 | 14 | 11 | 2 | 24 | 64 | 0 | 0 | 0 | 1.04 | 6.78 | 0.22 | 2.58 | 6.88 | 1.51 | 2.67 |
| 1994 | Seibu | Jap Pac | Intl | | - | 25 | 4 | 2 | 2.39 | 50 | 0 | 0 | 0 | 0 | 0 | 1 | 75.1 | 65 | 20 | 20 | 5 | 26 | 56 | 0 | 0 | 0 | 1.21 | 7.77 | 0.60 | 3.11 | 6.69 | 2.39 | 2.15 |
| 1995 | Seibu | Jap Pac | Intl | | - | 26 | 5 | 6 | 1.92 | 45 | 0 | 0 | 0 | 0 | 0 | 12 | 70.1 | 48 | 18 | 15 | 1 | 21 | 76 | 0 | 0 | 0 | 0.98 | 6.14 | 0.13 | 2.69 | 9.73 | 2.30 | 3.62 |
| 1996 | Seibu | Jap Pac | Intl | | - | 27 | 8 | 6 | 2.84 | 43 | 0 | 0 | 0 | 0 | 0 | 11 | 85.2 | 61 | 28 | 27 | 10 | 24 | 72 | 0 | 0 | 0 | 0.99 | 6.41 | 1.05 | 2.52 | 7.56 | 2.94 | 3.00 |
| 1997 | Seibu | Jap Pac | Intl | | - | 28 | 12 | 7 | 2.90 | 27 | 0 | 5 | 1 | 0 | 0 | 0 | 174.0 | 157 | 60 | 56 | 18 | 49 | 108 | 0 | 0 | 0 | 1.18 | 8.12 | 0.93 | 2.53 | 5.59 | 3.10 | 2.20 |
| 1998 | Seibu | Jap Pac | Intl | | - | 29 | 7 | 5 | 4.05 | 27 | 0 | 2 | 1 | 0 | 0 | 0 | 122.1 | 130 | 59 | 55 | 13 | 35 | 76 | 0 | 0 | 0 | 1.35 | 9.56 | 0.96 | 2.57 | 5.59 | 4.34 | 2.17 |
| 1999 | Seibu | Jap Pac | Intl | | - | 30 | 5 | 3 | 4.60 | 20 | 0 | 1 | 0 | 0 | 0 | 0 | 74.1 | 92 | 40 | 38 | 10 | 16 | 54 | 0 | 0 | 0 | 1.45 | 11.14 | 1.21 | 1.94 | 6.54 | 4.84 | 3.38 |
| 2000 | Seibu | Jap Pac | Intl | | 16 | 31 | 3 | 6 | 2.85 | 24 | 0 | 0 | 0 | 0 | 0 | 0 | 82.0 | 77 | 36 | 26 | 5 | 14 | 52 | 0 | 0 | 0 | 1.11 | 8.45 | 0.55 | 1.54 | 5.71 | 3.95 | 3.71 |
| 2002 | Seibu | Jap Pac | Intl | | - | 33 | 6 | 5 | 3.89 | 28 | 0 | 0 | 0 | 0 | 0 | 0 | 81.0 | 62 | 40 | 35 | 7 | 12 | 59 | 0 | 0 | 0 | 0.91 | 6.89 | 0.78 | 1.33 | 6.56 | 4.44 | 4.92 |
| 2003 | Seibu | Jap Pac | Intl | | - | 34 | 1 | 3 | 4.86 | 37 | 0 | 0 | 0 | 0 | 0 | 0 | 50.0 | 55 | 28 | 27 | 6 | 18 | 29 | 0 | 0 | 0 | 1.46 | 9.90 | 1.08 | 3.24 | 5.22 | 5.04 | 1.61 |
| 2004 | Seibu | Jap Pac | Intl | | - | 35 | 1 | 0 | 6.57 | 13 | 0 | 0 | 0 | 0 | 0 | 0 | 12.1 | 20 | 10 | 9 | 2 | 5 | 14 | 0 | 0 | 0 | 2.03 | 14.59 | 1.46 | 3.65 | 10.22 | 7.30 | 2.80 |