Tom Seaver vs Bob Welch: Career Stats Comparison
Tom Seaver has the better career line of the two, leading 11 of the 12 scored categories on this page (4 further counting totals are shown but not scored). Tom Seaver played 1967–1986 as a pitcher; Bob Welch played 1978–1994 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
Tom Seaver (1967–1986) and Bob Welch (1978–1994) — breaking in during the 1960s and the 1970s respectively, so they pitched against very different hitting environments. Tom Seaver finished with 311 wins and 3,640 strikeouts; Bob Welch finished with 211 wins and 1,969 strikeouts. The numbers below run them through identical career and rate-stat lenses.
Quick answer
- Who had the better ERA? Tom Seaver, with 2.86 to Bob Welch's 3.47.
- Who won more games? Tom Seaver, with 311 to Bob Welch's 211.
- Who recorded more strikeouts? Tom Seaver, with 3,640 to Bob Welch's 1,969.
- Who had the better WHIP? Tom Seaver, with 1.12 to Bob Welch's 1.27.
- Who pitched more innings? Tom Seaver, with 4,782.2 to Bob Welch's 3,092.0.
- Who threw more shutouts? Tom Seaver, with 61 to Bob Welch's 28.
- Who has the higher career Pitcher PIV? Tom Seaver, with 79,192 career Pitcher PIV to Bob Welch's 15,932.
Tom Seaver
Bob Welch
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. 12 of the 16 lines below are scored; the other 4 are counting totals on which fewer is not an achievement, so no one is awarded them. 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, and the 1960s and the 1970s were different run environments, so read them against their eras, or use the PIV card below, which is adjusted.
| Statistic | Tom Seaver | Bob Welch |
|---|---|---|
| Wins | Leads: 311 | 211 |
| Losses not scored | 205 | 146 |
| Games | Leads: 656 | 506 |
| Games Started | Leads: 647 | 462 |
| Complete Games | Leads: 231 | 61 |
| Shutouts | Leads: 61 | 28 |
| Saves | 1 | Leads: 8 |
| Strikeouts | Leads: 3,640 | 1,969 |
| Walks not scored | 1,390 | 1,034 |
| Hits Allowed not scored | 3,971 | 2,894 |
| Home Runs Allowed not scored | 380 | 267 |
| Innings Pitched | Leads: 4,782.2 | 3,092.0 |
| ERA | Leads: 2.86 | 3.47 |
| WHIP | Leads: 1.12 | 1.27 |
| K/9 | Leads: 6.85 | 5.73 |
| BB/9 | Leads: 2.62 | 3.01 |
PIV Comparison through 2025
By PIV (Player Impact Value), Tom Seaver outpaces Bob Welch 79,192 to 15,932 — driven by both sides of the ledger: 3,600 PIV per season to 937, across 22 seasons to 17. PIV adjusts each season to league baselines, so it's the cleanest way to compare careers across eras.
PIV is computed through the 2025 season. The career totals on this page include 2026 to date, so PIV does not yet reflect the 2026 season.
Peak Seasons
The best single seasons each player produced, ranked by ERA among qualified workloads (120+ innings).
Tom Seaver — top 3 seasons by ERA (lower is better)
Bob Welch — top 3 seasons by ERA (lower is better)
Verdict
On the head-to-head card, Tom Seaver leads in wins, strikeouts, ERA, and WHIP, while Bob Welch owns no headline categories. That doesn't settle the era debate, but on the raw scoreboard the edge goes to Tom Seaver. PIV agrees: Tom Seaver grades out higher across their careers. Click through to each profile for the full season-by-season breakdown.
Related Matchups
How the Tom Seaver and Bob Welch careers compare
Tom Seaver and Bob Welch were active at the same time between 1978 and 1986. With 656 games against 506 across 22 and 17 PIV seasons, neither player's totals owe much to extra seasons. Where Bob Welch comes out ahead, it is in saves (8 to 1). By rate, Tom Seaver struck out 6.85 and walked 2.62 per nine innings; Bob Welch struck out 5.73 and walked 3.01. Tom Seaver was mainly a starter (647 starts in 656 games), and Bob Welch was mainly a starter (462 starts in 506 games). Complete games (231 to 61) show how differently the two eras used starters. In WHIP, Tom Seaver's 1.12 beats Bob Welch's 1.27.
Tom Seaver vs Bob Welch: Frequently Asked Questions
- Who was better, Tom Seaver or Bob Welch?
- By the career statistics compared on this page, Tom Seaver leads Bob Welch in 11 of the 12 scored categories.
- Who had the better ERA?
- Tom Seaver, with 2.86 to Bob Welch's 3.47.
- Who won more games?
- Tom Seaver, with 311 to Bob Welch's 211.
- Who recorded more strikeouts?
- Tom Seaver, with 3,640 to Bob Welch's 1,969.
- Who had the better WHIP?
- Tom Seaver, with 1.12 to Bob Welch's 1.27.