Edwin Diaz vs Bob Grim: Career Stats Comparison
Edwin Diaz has the better career line of the two, leading 7 of the 12 scored categories on this page (4 further counting totals are shown but not scored). Edwin Diaz has played 2016–present as a pitcher; Bob Grim played 1954–1962 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
Edwin Diaz (2016–present) and Bob Grim (1954–1962) — breaking in during the 2010s and the 1950s respectively, so they pitched against very different hitting environments. Edwin Diaz has 30 wins and 867 strikeouts through October 12, 2026; Bob Grim finished with 61 wins and 443 strikeouts. The numbers below run them through identical career and rate-stat lenses.
Quick answer
- Who had the better ERA? Edwin Diaz, with 3.03 to Bob Grim's 3.61.
- Who won more games? Bob Grim, with 61 to Edwin Diaz's 30.
- Who recorded more strikeouts? Edwin Diaz, with 867 to Bob Grim's 443.
- Who had the better WHIP? Edwin Diaz, with 1.07 to Bob Grim's 1.37.
- Who pitched more innings? Bob Grim, with 759.2 to Edwin Diaz's 538.0.
- Who threw more shutouts? Bob Grim, with 4 to Edwin Diaz's 0.
- Who has the higher career Pitcher PIV? Edwin Diaz, with 21,805 career Pitcher PIV to Bob Grim's 7,752.
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 2010s and the 1950s were different run environments, so read them against their eras, or use the PIV card below, which is adjusted.
Edwin Diaz is still active — his totals below are current through October 12, 2026.
| Statistic | Edwin Diaz | Bob Grim |
|---|---|---|
| Wins | 30 | Leads: 61 |
| Losses not scored | 38 | 41 |
| Games | Leads: 541 | 268 |
| Games Started | 0 | Leads: 60 |
| Complete Games | 0 | Leads: 18 |
| Shutouts | 0 | Leads: 4 |
| Saves | Leads: 260 | 37 |
| Strikeouts | Leads: 867 | 443 |
| Walks not scored | 193 | 330 |
| Hits Allowed not scored | 382 | 708 |
| Home Runs Allowed not scored | 57 | 50 |
| Innings Pitched | 538.0 | Leads: 759.2 |
| ERA | Leads: 3.03 | 3.61 |
| WHIP | Leads: 1.07 | 1.37 |
| K/9 | Leads: 14.50 | 5.25 |
| BB/9 | Leads: 3.23 | 3.91 |
PIV Comparison through 2025
By PIV (Player Impact Value), Edwin Diaz outpaces Bob Grim 21,805 to 7,752 — driven by per-season impact — 2,423 PIV per season to 705 — rather than by longevity, since Edwin Diaz played 9 seasons to Bob Grim's 11. 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).
Edwin Diaz
No seasons meet the qualifying workload, so there is no peak-season list to show.
Bob Grim — top 2 seasons by ERA (lower is better)
Verdict
On the head-to-head card, Edwin Diaz leads in strikeouts, ERA, WHIP, and K/9, while Bob Grim owns wins and innings pitched. That doesn't settle the era debate, but on the raw scoreboard the edge goes to Edwin Diaz. PIV agrees: Edwin Diaz grades out higher across their careers. Click through to each profile for the full season-by-season breakdown.
Related Matchups
How the Edwin Diaz and Bob Grim careers compare
The two careers never overlapped: Bob Grim's ended in 1962, and Edwin Diaz debuted in 2016. Playing time explains much of the gap in the counting rows: Edwin Diaz has appeared in 541 games to Bob Grim's 268. By rate, Edwin Diaz struck out 14.50 and walked 3.23 per nine innings; Bob Grim struck out 5.25 and walked 3.91. Edwin Diaz worked mostly in relief (0 starts in 541 games, 260 saves), while Bob Grim split time between starting and relief (60 starts in 268 games). In WHIP, Edwin Diaz's 1.07 beats Bob Grim's 1.37. Edwin Diaz has no qualifying season for the peak list, while Bob Grim's best is 1954. Because Edwin Diaz is still playing, the totals above will keep moving through the season.
Edwin Diaz vs Bob Grim: Frequently Asked Questions
- Who was better, Edwin Diaz or Bob Grim?
- By the career statistics compared on this page, Edwin Diaz leads Bob Grim in 7 of the 12 scored categories.
- Who had the better ERA?
- Edwin Diaz, with 3.03 to Bob Grim's 3.61.
- Who won more games?
- Bob Grim, with 61 to Edwin Diaz's 30.
- Who recorded more strikeouts?
- Edwin Diaz, with 867 to Bob Grim's 443.
- Who had the better WHIP?
- Edwin Diaz, with 1.07 to Bob Grim's 1.37.