Buster Posey vs Sergio Romo: Career Stats Comparison
Buster Posey and Sergio Romo played different roles, so their careers are compared side by side rather than scored against each other. Buster Posey played 2009–2021 as a hitter; Sergio Romo played 2008–2022 as a pitcher.
- AVG (Batting Average):
- Hits divided by at bats. .300 is the traditional mark of an excellent hitter.
- HR (Home Runs):
- Hits on which the batter circled the bases and scored, almost always by clearing the outfield fence.
- RBI (Runs Batted In):
- Runs that scored as a direct result of a batter's plate appearance.
- OPS (On-Base Plus Slugging):
- On-base percentage plus slugging percentage, the quickest single summary of offensive value. .900 or better is star-level.
Data updated
Buster Posey (2009–2021) and Sergio Romo (2008–2022) played opposite sides of the ball, so there is no honest category-by-category scoreboard for this matchup. Sergio Romo pitched, totalling 42 wins and 789 strikeouts; Buster Posey hit, totalling 1,500 hits and 158 home runs. Each career is shown below in its own discipline, with PIV as the one measure that spans both roles.
Quick answer
- Who has the higher career PIV? Buster Posey, with 15,615 career PIV to Sergio Romo's 14,859.
- Who won more championships? Both — each won 3 World Series titles.
Buster Posey
Sergio Romo
Career Stats, Each in His Own Role
Sergio Romo is shown on pitching lines and Buster Posey on batting lines. Nothing is marked as a category winner, because these two cards measure different jobs — reading them cell against cell would tell you nothing.
Buster Posey — Hitter
| Statistic | Buster Posey |
|---|---|
| Games | 1,371 |
| At-Bats | 4,970 |
| Runs | 663 |
| Hits | 1,500 |
| Doubles | 293 |
| Triples | 9 |
| Home Runs | 158 |
| RBI | 729 |
| Walks | 540 |
| Strikeouts | 721 |
| Stolen Bases | 23 |
| Batting Avg | .302 |
| On-Base % | .372 |
| Slugging % | .460 |
| OPS | .831 |
Sergio Romo — Pitcher
| Statistic | Sergio Romo |
|---|---|
| Wins | 42 |
| Losses | 36 |
| Games | 821 |
| Games Started | 5 |
| Complete Games | 0 |
| Shutouts | 0 |
| Saves | 137 |
| Strikeouts | 789 |
| Walks | 179 |
| Hits Allowed | 579 |
| Home Runs Allowed | 85 |
| Innings Pitched | 722.2 |
| ERA | 3.21 |
| WHIP | 1.05 |
| K/9 | 9.83 |
| BB/9 | 2.23 |
PIV Comparison through 2025
Buster Posey carries a career batting PIV of 15,615; Sergio Romo carries a career pitching PIV of 14,859. Buster Posey is the higher of the two at 15,615 to 14,859. Both figures adjust each season to league baselines, but batting PIV and pitching PIV are calibrated separately — so read this as a directional comparison of career impact, not a settled verdict.
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 within his own role — ERA for the pitcher (120+ innings), OPS for the hitter (300+ at-bats).
Buster Posey — top 3 seasons by OPS
Sergio Romo
No seasons meet the qualifying workload, so there is no peak-season list to show.
Verdict
There is no head-to-head scoreboard for Sergio Romo and Buster Posey: one pitched and one hit, and no counting stat means the same thing on both cards. On PIV — the one metric that scores both roles against league baselines — Buster Posey grades higher, 15,615 to 14,859. Because the batting and pitching versions of PIV are calibrated separately, that gap is a directional signal about career impact rather than a ruling on who was the better ballplayer. Click through to each profile for the full season-by-season breakdown.
Related Matchups
How the Buster Posey and Sergio Romo careers compare
The careers of Buster Posey (2009–2021) and Sergio Romo (2008–2022) overlapped from 2009 to 2021, so for those seasons they faced the same league conditions. As a hitter, Buster Posey collected 1,500 hits and 158 home runs with a .831 OPS. As a pitcher, Sergio Romo went 42-36 with a 3.21 ERA and 789 strikeouts. Because one is a pitcher and the other a hitter, the page keeps their statistics in separate tables and uses PIV as the shared yardstick. Sergio Romo has no qualifying season for the peak list, while Buster Posey's best is 2012.
Buster Posey vs Sergio Romo: Frequently Asked Questions
- Who has the higher career PIV?
- Buster Posey, with 15,615 career PIV to Sergio Romo's 14,859.
- Who won more championships?
- Both — each won 3 World Series titles.
- How do Buster Posey and Sergio Romo compare?
- Buster Posey played 2009–2021 and Sergio Romo played 2008–2022; this page sets their career totals side by side in every category both accumulated.