MLB free agency 2025: Best fits for Pete Alonso

NEW YORK — A year after discovering teams across Major League Baseball did not deem him worthy of a lengthy contract, Pete Alonso is back on the free agent market searching for long-term love again.

In February, after an extended standoff, Alonso settled for a two-year, $54 million deal to return to the New York Mets with an opt-out after the 2025 season. He was paid $30 million for this year and posted numbers good enough to make opting out the clear choice. And Alonso didn’t waste time, announcing that was his plan minutes after the Mets lost their final regular-season game against the Miami Marlins to fall short of the playoffs.

His chances of finding a long-term partner are higher this time around for a few reasons. The first one is clear: He’s coming off a significantly stronger campaign. Alonso had his worst season in 2024, slashing .240/.329/.459 with 34 home runs. That, in a vacuum, was good production. But it was his fourth straight season with declining numbers — an alarming pattern considering Alonso was about to turn 30 and didn’t add value on defense or the basepaths.

The metrics suggested Alonso was still one of the worst defensive first basemen in baseball in 2025 — his minus-9 defensive runs saved and minus-9 outs above average both ranked 18th out of 18 qualified first basemen — but he rebounded in the batter’s box. With an adjusted swing and approach, Alonso hit the ball harder — his 93.5 mph average exit velocity was a career high — and the production followed.

Passan’s MLB offseason preview

From the big-name signings to the could-be trades, Jeff Passan breaks down the winter to come.Passan’s offseason preview »

He slashed .272/.347/.524 with 38 home runs and 126 RBIs mostly hitting behind Juan Soto. His 141 wRC+ was tied for the second-largest output of his career. He set the franchise record for career home runs, further solidifying his place as one of the most beloved Mets in recent history.

Also of note: Alonso played in all 162 games for the second consecutive season and has appeared in 1,008 of the Mets’ 1,032 regular-season games since debuting in 2019. He has started 993 of those games at first base, 60 at DH.

Over that span, his 264 career home runs rank third in baseball behind only Aaron Judge and Kyle Schwarber, a fellow free agent. Alonso is durable and consistent.

Then there’s the market. Alonso and Schwarber are the two premier power bats available in free agency this offseason. At first base, Vladimir Guerrero Jr.’s decision to sign a 14-year, $500 million extension with Toronto in April removed Alonso’s stiffest positional competition. Josh Naylor is a tier below — and a different player with less power but better defensively and on the bases — and Seattle wasn’t going to spend the necessary money for Alonso, but the Mariners retaining their first baseman nevertheless removes an option at the position for other clubs.

Add it up and Alonso should find a deal in the range of four to five years. The question is where. Here are a few possible landing spots for the five-time All-Star, starting with his three most aggressive suitors so far, including the only team he has ever known.

Mets president of baseball operations David Stearns said last week that he would “love” to bring back Alonso and closer Edwin Diaz, another All-Star free agent. Alonso’s stated willingness to serve as a designated hitter, at least in a part-time capacity, doesn’t hurt as the Mets prioritize improving a defense that regressed in 2025.

Editor’s Picks

2 Related

“He’s clearly a really good offensive player,” Stearns said at the GM meetings in Las Vegas. “And I think for any team the ability to get his bat in the lineup in multiple ways is helpful. And it’s great to know that Pete is open to stuff like that.”

But the Mets’ top offseason priority is pitching — in the rotation and the bullpen — and they have internal options for first base and DH in the short and long term. Mark Vientos, Brett Baty and Jeff McNeil could play first base. Juan Soto, after a poor defensive year in right field, will eventually see time at DH. Further, Stearns’ unwillingness to give Alonso what he wanted last winter indicates he prefers not to make that level of investment in him.

The Mets haven’t had someone other than Alonso start at first base on Opening Day since Adrián González began a 54-game cameo to conclude his career in 2018. A year later, Alonso debuted and went on to club 54 home runs en route to being named National League Rookie of the Year. He became a fan favorite in Queens over his seven seasons. But he could find himself in another uniform in 2026.

First base production in 2025: .244/.305/.386, 16 HR, 86 wRC+, -0.7 fWAR

Primary first basemen: Abraham Toro (57 starts), Romy Gonzalez (41), Triston Casas (27), Nathaniel Lowe (26)

Designated hitter production in 2025: .272/.361/.465, 26 HR, 125 wRC+, 2.5 fWAR

Primary designated hitters: Rafael Devers (73), Masataka Yoshida (44), Rob Refsnyder (18), Roman Anthony (17)

Most of Boston’s DH production last season came from Devers before he was traded in June. First base was a major problem beginning with Casas’ slow start and exacerbated when he was lost for the season with a knee injury in early May. The logical choice to replace him — Devers — refused the assignment, which led to Boston shipping him to San Francisco.

Keep up with the 2025-26 MLB offseason

We’ve got you covered on all the major hot stove signings and trades.Tracker » | Free agency, trade grades »

Toro, Gonzalez and Lowe, who was signed in August, handled the duty for the remainder of the season. Toro was designated for assignment in August. Lowe met the same fate Tuesday.

The Red Sox president of baseball operations, Craig Breslow, has made it clear: He wants to acquire an accomplished middle-of-the-order bat, preferably a right-handed one. Trading Devers, combined with Alex Bregman’s free agency, has left the Red Sox without much proven slug in their lineup. A reunion with Bregman would check that box. As would signing Alonso, who could split time at first base and DH with Casas if Boston were to keep him.

Do the Red Sox have the appetite for both free agents? Trading Devers moved $29.1 million off the competitive balance tax payroll for each of the next eight years. The Red Sox had approximately $98 million of their relatively modest $201 million CBT payroll come off the books after the season. Their 2026 payroll is projected to include more than $50 million in raises, but Boston is a big-market club with plenty of money to fill its needs.

First base production in 2025: .252/.318/.445, 29 HR, 107 wRC+, 2.0 fWAR

Primary first basemen: Spencer Steer (113 starts), Christian Encarnacion-Strand (25)

Designated hitter production in 2025: .240/.313/.407, 21 HR, 96 wRC+, -0.2 fWAR

Primary designated hitters: Gavin Lux (57 starts), Austin Hays (38), Miguel Andujar (20), Tyler Stephenson (17), Steer (16)

The Reds finished 14th in the majors in runs scored, but their collective 92 wRC+, a metric that adjusts for park factors and league context, ranked 24th. The Reds know there’s room for improvement playing half of their games at Great American Ball Park, a hitter’s haven, so they’re seeking to strengthen their offense.

Top 50 MLB free agents

How much will the biggest stars get paid this winter? Kiley McDaniel breaks down the 2025-26 free agent class. Rankings, contract projections »

First base and DH aren’t obvious needs. Spencer Steer clubbed 21 home runs in 146 games. Sal Stewart, who turns 22 next month, will be a bigger part of the calculus after posting a 121 OPS+ in his first 18 career games. But Alonso resides on another level. As does Schwarber, a Cincinnati-area native.

Now, the money part. Signing either slugger would require the largest free agent contract in franchise history; the current high mark is the two four-year, $64 million deals given to Nick Castellanos and Mike Moustakas in 2020. The Reds are estimated to carry a $120 million CBT payroll for next season after finishing with a $143 million payroll in 2025, their highest since 2021. That projection includes expected raises. If investing in a premier free agent is too rich — or if they all simply decide to play elsewhere — the Reds could land a cheaper alternative in the trade market by dealing from their starting rotation depth.

First base production in 2025: .262/.351/.479, 32 HR, 128 wRC+, 3.9 fWAR

Primary first basemen: Bryce Harper (130 starts)

Designated hitter production in 2025: .238/.362/.566, 57 HR, 152 wRC+, 5.1 fWAR

Primary designated hitters: Kyle Schwarber (154 starts)

With Bryce Harper at first base, Alonso probably would only make sense for the Phillies if they do not re-sign Schwarber — the best designated hitter in the majors this side of Shohei Ohtani. But Phillies owner John Middleton isn’t afraid to spend money, and the team could make both Alonso and Schwarber work by moving Harper back to the outfield. Offensively, Alonso’s right-handed bat makes sense, since the Phillies are expected to move on from Nick Castellanos, catcher J.T. Realmuto is a free agent, and Alec Bohm is a candidate for a trade.

First base production in 2025: .246/.323/.411, 18 HR, 103 wRC+, 1.3 fWAR

Primary first basemen: Spencer Horwitz (93 starts), Enmanuel Valdez (22)

Designated hitter production in 2025: .238/.328/.390, 19 HR, 98 wRC+, 0.0 fWAR

Primary designated hitters: Andrew McCutchen (120 starts), Bryan Reynolds (34)

This is a long shot, but the Pirates want to spend money on upgrading their offense to complement a strong pitching staff headlined by Cy Young Award winner Paul Skenes. Like the A’s last winter in their quest to upgrade their starting rotation, that could require overpaying for an impact bat. The price of doing business.

First base production in 2025: .243/.310/.369, 14 HR, 92 wRC+, 0.6 fWAR

Primary first basemen: Coby Mayo (67 starts), Ryan Mountcastle (50), Ryan O’Hearn (39)

Designated hitter production in 2025: .221/.296/.380, 22 HR, 90 wRC+, -0.5 fWAR

Primary designated hitters: Mountcastle (33 starts), O’Hearn (31), Adley Rutschman (18), Jordan Westburg (16), Tyler O’Neill (13)

At the GM meetings, Orioles general manager Mike Elias said he wanted to add a power hitter, preferably an outfielder, this offseason. Acquiring Taylor Ward for right-hander Grayson Rodriguez on Tuesday checked that box. But they could always add more slug and Alonso would give them plenty.

Designated hitter production in 2025: .282/.354/.484, 34 HR, 133 wRC+, 3.6 fWAR

Primary designated hitters: George Springer (80 starts), Anthony Santander (30), Vladimir Guerrero Jr. (24)

This fit isn’t clean, but the Blue Jays could lose the right-handed-hitting Bo Bichette in free agency this winter and Alonso could serve as a replacement. The Blue Jays expressed interest in Alonso last winter, but that was when Guerrero’s future was very uncertain. We’re not even going to bother listing first base as a possibility for Alonso in Toronto because that’s Guerrero’s job for a very long time. Springer enjoyed a resurgent season primarily as Toronto’s DH, so he would have to move back to the outfield to make room for Alonso.