Jason Giambi vs Mark McGwire: Career Stats Comparison
Jason Giambi (1995–2014) and Mark McGwire (1986–2001) — they broke in during the 1990s and the 1980s respectively, which makes the side-by-side worth doing carefully. Jason Giambi finished with 2,010 hits and 440 home runs; Mark McGwire finished with 1,626 hits and 583 home runs. Below is the full career table, PIV adjustment, peak seasons, and a verdict.
Jason Giambi
Mark McGwire
Career Stats Side-by-Side
Every cell below is a career total or career rate for Jason Giambi and Mark McGwire. Cells highlighted in green mark the category leader. Counting stats reward longevity; the rate stats at the bottom are era-agnostic.
| Statistic | Jason Giambi | Mark McGwire |
|---|---|---|
| Games | 2,260 | 1,874 |
| At-Bats | 7,267 | 6,187 |
| Runs | 1,227 | 1,167 |
| Hits | 2,010 | 1,626 |
| Doubles | 405 | 252 |
| Triples | 9 | 6 |
| Home Runs | 440 | 583 |
| RBI | 1,441 | 1,414 |
| Walks | 1,366 | 1,317 |
| Strikeouts | 1,572 | 1,596 |
| Stolen Bases | 20 | 12 |
| Batting Avg | .277 | .263 |
| On-Base % | .399 | .394 |
| Slugging % | .516 | .588 |
| OPS | .916 | .982 |
PIV Comparison
By PIV (Player Impact Value), Mark McGwire leads Jason Giambi 44,531 to 37,008 — a gap driven primarily by per-season impact (2,620 vs 1,762 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 OPS among qualified workloads (300+ at-bats).
Jason Giambi — top 3 seasons by OPS
Mark McGwire — top 3 seasons by OPS
Verdict
On the head-to-head card, Jason Giambi leads in hits, RBI, runs, and stolen bases, while Mark McGwire owns home runs and OPS. That doesn't settle the era debate, but on the raw scoreboard the edge goes to Jason Giambi. Note that PIV actually grades Mark McGwire ahead, which means Jason Giambi's edge is partly volume. Click through to each profile for the full season-by-season breakdown.