Harvey Haddix vs Jim Kaat: Career Stats Comparison
Harvey Haddix (1952–1965) and Jim Kaat (1959–1983) — both came up during the 1950s, so the matchup is a direct one. Harvey Haddix compiled 136 wins and 1,575 strikeouts; Jim Kaat put up 283 wins and 2,461 strikeouts. The numbers below run them through identical career and rate-stat lenses.
Harvey Haddix
Career Stats Side-by-Side
Every cell below is a career total or career rate. Cells highlighted in green mark the player who leads that line. For pitchers, lower ERA, WHIP, and BB/9 lead; higher K/9 leads.
| Statistic | Harvey Haddix | Jim Kaat |
|---|---|---|
| Wins | 136 | 283 |
| Losses | 113 | 237 |
| Games | 453 | 898 |
| Games Started | 285 | 625 |
| Complete Games | 99 | 180 |
| Shutouts | 20 | 31 |
| Saves | 21 | 18 |
| Strikeouts | 1,575 | 2,461 |
| Walks | 601 | 1,083 |
| Hits Allowed | 2,154 | 4,620 |
| Home Runs Allowed | 240 | 395 |
| Innings Pitched | 2,235 | 4,530 |
| ERA | 3.63 | 3.45 |
| WHIP | 1.23 | 1.26 |
| K/9 | 6.34 | 4.89 |
| BB/9 | 2.42 | 2.15 |
PIV Comparison
By PIV (Player Impact Value), Harvey Haddix leads Jim Kaat 32,941 to 26,792 — a gap driven primarily by per-season impact (2,196 vs 957 per year). PIV adjusts each season to league baselines, so it's the cleanest way to compare careers across eras.
Peak Seasons
The best single seasons each player produced, ranked by ERA among qualified workloads (120+ innings).
Harvey Haddix — top 3 seasons by ERA (lower is better)
Jim Kaat — top 3 seasons by ERA (lower is better)
Verdict
On the head-to-head card, Jim Kaat leads in wins, strikeouts, ERA, and innings pitched, while Harvey Haddix owns WHIP and K/9. That doesn't settle the era debate, but on the raw scoreboard the edge goes to Jim Kaat. Note that PIV actually grades Harvey Haddix ahead, which means Jim Kaat's edge is partly volume. Click through to each profile for the full season-by-season breakdown.