Pedro Martinez vs Bob Welch: Career Stats Comparison
Pedro Martinez and Bob Welch are close to even, splitting the 12 scored categories on this page 6–6 (4 further counting totals are shown but not scored). Pedro Martinez played 1992–2009 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
Pedro Martinez (1992–2009) and Bob Welch (1978–1994) — breaking in during the 1990s and the 1970s respectively, so they pitched against very different hitting environments. Pedro Martinez finished with 219 wins and 3,154 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? Pedro Martinez, with 2.93 to Bob Welch's 3.47.
- Who won more games? Pedro Martinez, with 219 to Bob Welch's 211.
- Who recorded more strikeouts? Pedro Martinez, with 3,154 to Bob Welch's 1,969.
- Who had the better WHIP? Pedro Martinez, with 1.05 to Bob Welch's 1.27.
- Who pitched more innings? Bob Welch, with 3,092.0 to Pedro Martinez's 2,827.1.
- Who threw more shutouts? Bob Welch, with 28 to Pedro Martinez's 17.
- Who has the higher career Pitcher PIV? Pedro Martinez, with 113,314 career Pitcher PIV to Bob Welch's 15,932.
Pedro Martinez
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 1990s and the 1970s were different run environments, so read them against their eras, or use the PIV card below, which is adjusted.
| Statistic | Pedro Martinez | Bob Welch |
|---|---|---|
| Wins | Leads: 219 | 211 |
| Losses not scored | 100 | 146 |
| Games | 476 | Leads: 506 |
| Games Started | 409 | Leads: 462 |
| Complete Games | 46 | Leads: 61 |
| Shutouts | 17 | Leads: 28 |
| Saves | 3 | Leads: 8 |
| Strikeouts | Leads: 3,154 | 1,969 |
| Walks not scored | 760 | 1,034 |
| Hits Allowed not scored | 2,221 | 2,894 |
| Home Runs Allowed not scored | 239 | 267 |
| Innings Pitched | 2,827.1 | Leads: 3,092.0 |
| ERA | Leads: 2.93 | 3.47 |
| WHIP | Leads: 1.05 | 1.27 |
| K/9 | Leads: 10.04 | 5.73 |
| BB/9 | Leads: 2.42 | 3.01 |
PIV Comparison through 2025
By PIV (Player Impact Value), Pedro Martinez outpaces Bob Welch 113,314 to 15,932 — driven by both sides of the ledger: 6,295 PIV per season to 937, across 18 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).
Pedro Martinez — 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, Pedro Martinez leads in wins, strikeouts, ERA, and WHIP, while Bob Welch owns innings pitched. That doesn't settle the era debate, but on the raw scoreboard the edge goes to Pedro Martinez. PIV agrees: Pedro Martinez grades out higher across their careers. Click through to each profile for the full season-by-season breakdown.
Related Matchups
How the Pedro Martinez and Bob Welch careers compare
Pedro Martinez and Bob Welch were active at the same time between 1992 and 1994. With 476 games against 506 across 18 and 17 PIV seasons, neither player's totals owe much to extra seasons. By rate, Pedro Martinez struck out 10.04 and walked 2.42 per nine innings; Bob Welch struck out 5.73 and walked 3.01. Both had the same role: Pedro Martinez was mainly a starter (409 starts in 476 games); Bob Welch was mainly a starter (462 starts in 506 games). In WHIP, Pedro Martinez's 1.05 beats Bob Welch's 1.27.
Pedro Martinez vs Bob Welch: Frequently Asked Questions
- Who had the better ERA?
- Pedro Martinez, with 2.93 to Bob Welch's 3.47.
- Who won more games?
- Pedro Martinez, with 219 to Bob Welch's 211.
- Who recorded more strikeouts?
- Pedro Martinez, with 3,154 to Bob Welch's 1,969.
- Who had the better WHIP?
- Pedro Martinez, with 1.05 to Bob Welch's 1.27.