Jerry Koosman vs Gaylord Perry: Career Stats Comparison
Gaylord Perry has the better career line of the two, leading 10 of the 12 statistical categories compared on this page. Jerry Koosman played 1967–1985 as a pitcher; Gaylord Perry played 1962–1983 as a pitcher.
- ERA (Earned Run Average):
- Earned runs allowed per nine innings pitched: (ER × 9) ÷ IP. The primary measure of pitching effectiveness.
- W (Wins):
- Games credited to a pitcher whose team took a lead it never surrendered while he was the pitcher of record.
- SO (Strikeouts):
- For a batter, times retired on a third strike; for a pitcher, batters retired on a third strike.
- WHIP (Walks and Hits per Inning Pitched):
- Baserunners allowed per inning: (BB + H) ÷ IP. Under 1.00 is elite.
Data updated
Jerry Koosman (1967–1985) and Gaylord Perry (1962–1983) — both came up during the 1960s, so the matchup is a direct one. Jerry Koosman compiled 222 wins and 2,556 strikeouts; Gaylord Perry put up 314 wins and 3,534 strikeouts. The numbers below run them through identical career and rate-stat lenses.
Quick answer
- Who had the better ERA? Gaylord Perry, with 3.11 to Jerry Koosman's 3.36.
- Who won more games? Gaylord Perry, with 314 to Jerry Koosman's 222.
- Who recorded more strikeouts? Gaylord Perry, with 3,534 to Jerry Koosman's 2,556.
- Who had the better WHIP? Gaylord Perry, with 1.18 to Jerry Koosman's 1.26.
- Who pitched more innings? Gaylord Perry, with 5,350 to Jerry Koosman's 3,839.
- Who threw more shutouts? Gaylord Perry, with 53 to Jerry Koosman's 33.
- Who has the higher career Pitcher PIV? Gaylord Perry, with 78,312 career Pitcher PIV to Jerry Koosman's 42,939.
Jerry Koosman
Gaylord Perry
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. Lower ERA, WHIP and BB/9 lead; higher K/9 leads. Totals where fewer is not an achievement -- losses, walks and hits allowed -- are left unmarked, because they track how long someone pitched rather than how well. Rate stats are not era-adjusted: compare them with the era in mind, or use the PIV card below, which is.
| Statistic | Jerry Koosman | Gaylord Perry |
|---|---|---|
| Wins | 222 | Leads: 314 |
| Losses | 209 | 265 |
| Games | 612 | Leads: 777 |
| Games Started | 527 | Leads: 690 |
| Complete Games | 140 | Leads: 303 |
| Shutouts | 33 | Leads: 53 |
| Saves | Leads: 17 | 11 |
| Strikeouts | 2,556 | Leads: 3,534 |
| Walks | 1,198 | 1,379 |
| Hits Allowed | 3,635 | 4,938 |
| Home Runs Allowed | 290 | 399 |
| Innings Pitched | 3,839 | Leads: 5,350 |
| ERA | 3.36 | Leads: 3.11 |
| WHIP | 1.26 | Leads: 1.18 |
| K/9 | Leads: 5.99 | 5.94 |
| BB/9 | 2.81 | Leads: 2.32 |
PIV Comparison
By PIV (Player Impact Value), Gaylord Perry outpaces Jerry Koosman 78,312 to 42,939 — a gap driven primarily by per-season impact (3,132 vs 2,147 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).
Jerry Koosman — top 3 seasons by ERA (lower is better)
Gaylord Perry — top 3 seasons by ERA (lower is better)
Verdict
On the head-to-head card, Gaylord Perry leads in wins, strikeouts, ERA, and WHIP, while Jerry Koosman owns K/9. That doesn't settle the era debate, but on the raw scoreboard the edge goes to Gaylord Perry. PIV agrees: Gaylord Perry grades out higher across their careers. Click through to each profile for the full season-by-season breakdown.
Related Matchups
Jerry Koosman vs Gaylord Perry: Frequently Asked Questions
- Who was better, Jerry Koosman or Gaylord Perry?
- By the career statistics compared on this page, Gaylord Perry leads Jerry Koosman in 10 of 12 categories.
- Who had the better ERA?
- Gaylord Perry, with 3.11 to Jerry Koosman's 3.36.
- Who won more games?
- Gaylord Perry, with 314 to Jerry Koosman's 222.
- Who recorded more strikeouts?
- Gaylord Perry, with 3,534 to Jerry Koosman's 2,556.
- Who had the better WHIP?
- Gaylord Perry, with 1.18 to Jerry Koosman's 1.26.