Last Updated on October 8, 2025 by Matt Musico
If you’ve ever wondered who the Mets single season HR leaders are at each position, then you’re in the right place. Outside of pitcher and designated hitter, each player had to man their position for at least 100 games (or 75% of games played) for the season in question.
After you’re done checking this out, head over to the Mets’ all-time and single-season home run leaderboards.
Related: A Complete Guide to Single-Season (& Single-Game) HR Performances
Mets Single Season HR Leaders
Catcher: Todd Hundley, 41 Home Runs in 1996
What, you thought Mike Piazza would be here? He almost was — the Hall of Fame slugger hit 40 in 1999, but that was the closest he got. Todd Hundley held at least a share of the Mets’ single-season home run record until Pete Alonso broke it in 2019. More on him later.
Hundley did have three seasons of double-digit homers before this 41-dinger performance. But still, he had slugged just 50 across six seasons (491 games) heading into 1996. The backstop had at least eight homers and 20 RBI in four different months, which also included an OPS of .933 or better.
Pitcher: Three-Way Tie at 3 Home Runs
Tom Seaver (1972), Walt Terrell (1983), and Noah Syndergaard (2016) will forever be deadlocked at the top of the Mets’ single-season pitcher home run leaderboard.
Seaver went 21-12 with a 2.92 ERA on the mound in ’72, finishing fifth in Cy Young voting. Terrell went 8-8 with a 3.57 ERA in ’83. The three homers he hit were his only big leaguer. The 2016 campaign was Syndergaard’s best to date. He went 14-9 with a 2.60 ERA, finished eighth in Cy Young voting, and was also selected to the All-Star Game. Thor hit a total of six homers for New York in his career.
First Base: Pete Alonso, 53 Home Runs in 2019
It didn’t take Pete Alonso long to etch his name in franchise record books thanks to his ability to hit home runs. He’s already within the top five all-time in Mets history, and we’re now on the edge of our seats with each homer that gets slugged.
Pete hit 30 before the All-Star break, which is among the most first-half dingers in MLB history. He then proceeded to win his first Home Run Derby before coming back and becoming the league’s rookie home run king. His 120 RBI are among the most in franchise history for a single season.
The Phillies were the only NL East team he didn’t hit at least seven homers against (he slugged three). Alonso’s eight dingers against the Miami Marlins were his most among divisional foes, but the first baseman loved facing the Braves. Across 86 plate appearances, he slashed .329/.430/.685 with seven home runs and 20 RBI.
READ MORE: Pete Alonso Is Already 1-of-1 When It Comes to Mets Home Run Royalty
Second Base: Edgardo Alfonzo, 27 Home Runs in 1999
The 1999 season began a two-year stretch that was the best in Edgardo Alfonzo’s career. It included consecutive years of at least a .300 average, 25 homers, 90 RBI, and a top-15 finish in NL MVP voting. His higher finish in MVP voting came in ’99 when he placed eighth. Alfonzo also won his only Silver Slugger Award during that campaign.
If we split his performance during games into three parts, Alfonzo was incredibly consistent. His OPS was never lower than .855 or higher than .895 between innings 1-3, 4-6, and 7-9. When it came to power, though, he liked getting off to a fast start. Nine of Alfonzo’s 27 homers came in the first inning. He didn’t hit more than five in any other inning.
Shortstop: Francisco Lindor, 33 Home Runs in 2024
Francisco Lindor hit the trifecta for Mets single-season shortstop records regarding home runs (26), RBI (107), and fWAR (6.8) in 2022. He’s since broken the franchise shortstop home run record each of the following two years. The 2023 campaign was his first 30-30 season, and he nearly did it again in 2024. If he didn’t miss a bunch of time down the stretch because of a back injury, he probably would’ve finished with more than 29 steals.
This is the first time Lindor has slugged 30-plus homers in consecutive seasons since he did it three straight years for Cleveland from 2017-19.
It didn’t look like he’d finish at this number upon seeing his struggles through the end of May. Lindor was hitting .229/.297/.403 with nine homers and 29 RBI through his first 256 plate appearances of the season. Over his final 433 trips to the plate, his triple slash jumped up to .300/.372/.558 with 24 homers and 62 RBI.
Third Base: Howard Johnson, 38 Home Runs in 1991
Before David Wright set the standard for Mets third baseman, there was Howard Johnson. His 38 home runs and 117 RBI both led the league in 1991. This was also his second career 30-30 season with New York. Just like his first one (in 1989), HoJo went to the All-Star Game, won a Silver Slugger Award, and placed fifth in NL MVP voting.
His numbers between the first half (19 homers, 16 doubles, 63 RBI, 14 steals) were quite similar to what he did in the second half (19 homers, 18 doubles, 54 RBI, 16 steals). That was made possible by an outrageous last month of the year. Over his final 143 trips to the plate, he posted a .990 OPS with 10 homers, 10 doubles, 31 RBI, and 11 steals.
Mets Single Season HR Leaders
Left Field: Frank Thomas (1962) & Cliff Floyd (2005), 34 Home Runs
Many will point to Dave Kingman’s 36 homers in 1975 here, but he just didn’t play left field enough. He was on that part of the diamond for only about half his games played. So, we’ve got a good old-fashioned tie between Frank Thomas and Cliff Floyd.
Those 34 homers for Thomas ended up being a single-season career-high mark. It was also the first time he reached the 30-homer plateau since 1953. He slugged 20 of these homers over the final three months, including 10 in August.
Cliff Floyd spent four years with the Mets. In three of those years, he combined to hit 47 homers. And in one of them — yup, you guessed it, in 2005 — he hit 34. The left-handed slugger very much enjoyed hitting at Shea Stadium that year, as 21 came in front of the Flushing Faithful.
Floyd was consistent regardless of the number of outs in an inning, but he particularly liked hitting with two down. He posted a .829 OPS with 13 homers and 44 RBI in that situation.
Center Field: Carlos Beltran, 41 Home Runs in 2006
Carlos Beltran was the guy Hundley shared the franchise’s single-season home run record with until Alonso came along. This was the start of a three-year stretch where Beltran slugged at least 27 homers with 112-plus RBI for New York. Nothing topped what he did in ’06, though.
It didn’t matter whether the Mets were winning or losing — Beltran’s performance was just about identical. When New York held a lead, he hit .283/.396/.626 with 16 homers and 52 RBI. If he stepped to the plate with the Mets losing, he slashed .286/.402/.674 with another 16 homers and 35 RBI.
Right Field: Juan Soto, 43 Home Runs in 2025
The Mets disappointed in 2025, but Juan Soto certainly didn’t (despite a slow start). This was his first season of a 15-year, $765 million contract he signed in December 2024, and he’s immediately inserted himself into the top five power seasons ever in Mets history.
Soto’s season could really be summed up by looking at what he did through the first two months compared to the final four months. Upon waking up on June 1, Soto had struggled to a very un-Soto-like .231/.357/.413 line with nine homers, 11 doubles, 27 RBI, 36 runs scored, and seven steals in 255 plate appearances.
But that’s when he turned on the afterburners (the Mets, unfortunately, couldn’t do the same). Over his final 460 trips to the plate, Soto slashed .282/.417/.588 with 34 homers, nine doubles, 78 RBI, 84 runs scored, and 31 steals. So, yes — he went 30-30 in just four months.
The overall stat line will lead to plenty of NL MVP votes. Soto hit .263/.396/.525 with 43 homers, 20 doubles, 105 RBI, 120 runs scored, 127 walks, and 38 steals. He joins only Barry Bonds (1996 and 1997) and Jeff Bagwell (1997 and 1999) to have a season in which he finished with at least 40 homers, 30 steals, 100 RBI, 100 runs scored, and 100 walks.
Designated Hitter: J.D. Martinez, 16 in 2024
J.D. Martinez signed a one-year deal to join the Mets for the 2024 season. His year hasn’t been nearly as productive as what he did in 2023 with the Los Angeles Dodgers. However, it’s still enough to set a new franchise home run record for designated hitters.
He preferred hitting at home in front of the Citi Field crowd. Martinez slugged 10 of his 16 homers in Queens, while his OPS was much better in New York (.806) than it was on the road (.646). What torched his season-long stats was struggling at the plate following the All-Star break. The right-handed slugger hit just .199/.282/.340 in the second half.
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