First-Class Bowling in Each Season by Stephen Jefferies
| Season | Balls | Mdns | Runs | Wkts | BB | Ave | 5wI | 10wM | |
| 1978-79 | (South Africa) | 625 | 24 | 282 | 3 | 2-36 | 94.00 | 0 | 0 |
| 1979-80 | (South Africa) | 786 | 40 | 254 | 11 | 2-20 | 23.09 | 0 | 0 |
| 1980-81 | (South Africa) | 1434 | 54 | 579 | 15 | 3-27 | 38.60 | 0 | 0 |
| 1981-82 | (South Africa) | 2642 | 117 | 1166 | 52 | 5-46 | 22.42 | 1 | 0 |
| 1982 | (England) | 168 | 3 | 109 | 5 | 3-57 | 21.80 | 0 | 0 |
| 1982-83 | (South Africa) | 2942 | 114 | 1386 | 58 | 6-91 | 23.89 | 3 | 0 |
| 1983 | (England) | 1669 | 74 | 797 | 32 | 8-46 | 24.90 | 2 | 1 |
| 1983-84 | (South Africa) | 1437 | 42 | 823 | 32 | 7-105 | 25.71 | 2 | 1 |
| 1984 | (England) | 2705 | 85 | 1392 | 43 | 6-67 | 32.37 | 2 | 0 |
| 1984-85 | (South Africa) | 1152 | 29 | 529 | 20 | 4-39 | 26.45 | 0 | 0 |
| 1985 | (England) | 697 | 13 | 379 | 12 | 4-64 | 31.58 | 0 | 0 |
| 1985-86 | (South Africa) | 1762 | 72 | 810 | 35 | 5-30 | 23.14 | 2 | 0 |
| 1986-87 | (South Africa) | 1285 | 53 | 588 | 23 | 4-62 | 25.56 | 0 | 0 |
| 1987-88 | (South Africa) | 1736 | 72 | 793 | 35 | 10-59 | 22.65 | 2 | 1 |
| 1988 | (England) | 2131 | 53 | 1216 | 34 | 8-97 | 35.76 | 2 | 0 |
| 1988-89 | (South Africa) | 869 | 29 | 427 | 11 | 3-55 | 38.81 | 0 | 0 |
| 1989 | (England) | 1198 | 30 | 702 | 12 | 4-61 | 58.50 | 0 | 0 |
| 1989-90 | (South Africa) | 1014 | 43 | 444 | 21 | 5-63 | 21.14 | 2 | 1 |
| 1990-91 | (South Africa) | 578 | 22 | 260 | 12 | 6-42 | 21.66 | 1 | 0 |
| 1991-92 | (South Africa) | 210 | 9 | 92 | 3 | 2-36 | 30.66 | 0 | 0 |
| 1993-94 | (South Africa) | 376 | 13 | 176 | 9 | 4-20 | 19.55 | 0 | 0 |
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