Pete Alonso hit his 300th career home run on Tuesday, September 15, at Citi Field — the same ballpark where he became the Mets‘ all-time home run leader, and the same franchise that never made him a formal contract offer. With one swing, he joined the shortest list in baseball history.
A Podium Almost No One Has Reached
According to Sarah Langs of MLB.com, citing Elias Sports Bureau data, only two players in the history of the sport had reached 300 home runs before the end of their eighth MLB season. Ralph Kiner got there with 329 homers from 1946 to 1953, dominating the postwar National League with the Pittsburgh Pirates. Albert Pujols arrived at 319 during his Cardinals years, the most consistent offensive machine of the 2000s. Alonso is now third on that list — at exactly 300.
This is not a fluke of timing. In 2026 with the Baltimore Orioles, Alonso carries a 4.1 fWAR, leads the American League with 101 RBI, and is posting an .859 OPS. He is not the same player the Mets watched walk out the door; he is one who has kept producing at a pace very few hitters in history have sustained.
The Elias Sports Bureau adds one more layer: Alonso could become just the third player to hit his 300th home run against a team with whom he played 1,000 or more games, following Willie Horton in 1979 (Seattle vs. Detroit) and Torii Hunter in 2013 (Detroit vs. Minnesota). The kind of footnote that makes a milestone impossible to ignore.
The Most Uncomfortable Week in Citi Field History
The Orioles-Mets series at Citi Field carried some weight. On Monday, September 14 — Alonso’s first return to the stadium as a visitor — he went 0-for-4 with 299 home runs while a crowd of 35,800 gave him standing ovations every time he stepped to the plate. The next day, he hit No. 300.
That same Monday night, Baltimore beat New York 2-1 and officially eliminated the Mets from postseason contention. The irony writes itself: the player David Stearns never formally pursued after the 2025 season came back to hit a historic milestone and close the door on his former team’s October at the same time.
New York’s first basemen in 2026, meanwhile, combined to hit .235 with 18 home runs, a .682 OPS, and a collective fWAR of -0.4. The Citi Field crowd responded with chants of «Fire Stearns» from the stands. The gap between keeping Alonso and not keeping him is written in the numbers — and on the scoreboard from that week.
What the Numbers Actually Say
Alonso’s place in the record books is backed by what Statcast tracked in 2026. Here is what the season looks like:
- Plate appearances: 656
- Home runs: 36 | RBI: 101
- AVG: .268 | OPS: .859
- xwOBA: .393 — 98th percentile
- Exit velocity: 93.8 mph — 98th percentile
- Barrel rate: 13.8% — 91st percentile
- Hard-hit rate: 55.8% — 98th percentile
- Bat speed: 74.6 mph — 79th percentile
- Sprint speed: 5th percentile (one of the slowest in MLB)
He does not beat you with his legs. He never has. He beats you with the bat, and on Tuesday night at Citi Field, he did it in the place that stings the most.
