The Mets’ bullpen was the team’s Achilles heel in 2025. The unit was dealt a huge blow when Edwin Díaz left for the Dodgers in free agency. Through the end of June, though, the Mets’ bullpen ranked fourth in the majors with a 3.35 ERA. A recent four-day rough patch against the Braves and Royals, in which the bullpen allowed 32 earned runs in 19 1/3 innings, has put a dent in its overall stats, knocking it down to 15th in the majors with a 4.01 ERA. Still, in an otherwise lost season, the Mets’ bullpen has been one of the team’s strengths, though it will likely look different after the trade deadline.

Devin Williams: C-

Williams was the unit’s biggest addition in the offseason, but he’s been the most inconsistent arm in the bullpen. He had a disastrous month of April, a month in which his ERA ballooned as high as 10.29. From April 26 to May 21, Williams didn’t allow a single earned run, but then surrendered a walk-off grand slam to the Marlins’ Heriberto Hernández. Williams allowed just one earned run in June, but has stumbled in July, blowing two of his last three save opportunities. Williams’ 3.35 FIP, 3.53 xFIP, 3.17 xERA and .386 BABiP suggest that he’s run into a decent amount of bad luck, but he hasn’t helped himself with his career-worst 12.8% walk rate. His signature airbender might best encapsulate his season – opponents have a .197 xBA, .308 xSLG and .251 xwOBA against it, all at least 75 points lower than its surface stats. Williams has only given up three homers this year, but all have occurred with men on base, including two grand slams. (3-2, 4.83 ERA, 1.705 WHIP, 44 K, 31 2/3 IP, 13 SV, 3 BSV, -0.7 bWAR, 0.5 fWAR).

Luke Weaver: A

On April 30, Weaver entered in the eighth inning against the Nationals protecting a 4-3 lead, and gave up a go-ahead two-run homer to CJ Abrams. The righty was charged with the loss and saw his ERA increase to an unsightly 6.00. Since then, Weaver hasn’t allowed an earned run in 27 innings. He’s been particularly dominant since the start of June, allowing just five base runners (two hits and three walks) and striking out 19 batters over 14 1/3 innings. Weaver has registered a plus-8 run value on his fastball and a plus-5 mark on his change-up, with both pitches producing far better results than they did in 2025. Now, the Mets face an incredibly tough decision: do they trade Weaver this summer? The 32-year-old is under contract for 2027, set to make $12.5 million. However, in today’s game, relievers tend to net hefty returns on the trade market, and Weaver’s value is at its peak right now. (2-1, 1.85 ERA, 0.821 WHIP, 43 K, 39 IP, 1 SV, 1.7 bWAR, 1.2 fWAR).

Brooks Raley: A-

In his age-38 season, Raley has remained a steady presence in the back end of the Mets’ bullpen. The soft-tossing lefty has excelled at limiting hard contact, holding opponents to a weak 32.3% hard-hit rate and allowing just two home runs in 35 1/3 innings. While he’s had reverse splits in past years, Raley has held southpaws to a .550 OPS in 2026. While Raley’s walk rate has gone up this year, his strand rate has increased from 68.2% to 79.6%. He has also allowed just four of his 14 inherited runners to score. With the trade deadline looming, it’s almost certain Raley will be on a different team in the coming weeks, but he’s giving the Mets everything they could’ve asked for over his time in Flushing. (4-4, 2.04 ERA, 1.132 WHIP, 36 K, 35 1/3 IP, 1.2 bWAR, 0.7 fWAR).

Huascar Brazobán: B+

Brazobán’s grade likely would’ve been higher if it weren’t for a meltdown against the Braves on July 5, in which he recorded just one out and gave up four runs and five hits, including a grand slam off the bat of Drake Baldwin. That afternoon, his ERA skyrocketed from 1.94 to 3.00, but he has bounced back with a pair of scoreless outings. Brazobán has been among the best in the majors at limiting hard contact, owning a 100th-percentile average exit velocity (83.6 mph), 99th-percentile hard-hit rate (23.7%) and 98th-percentile barrel rate (2.6%). Walks have been an issue for Brazobán this year, as has been the case for most of his career, but he also has allowed just three home runs and produced a career-best 53.4% ground-ball rate, while also leading the team’s primary relievers with 45 2/3 innings pitched. (4-2, 2.76 ERA, 1.095 WHIP, 44 K, 45 2/3 IP, 1.2 bWAR, 0.7 fWAR).

Austin Warren: B-

Much like Brazobán, Warren’s numbers took a big hit due to his appearances against the Braves and Royals. He entered the Mets’ contest on July 4 with a 2.45 ERA in 33 innings. However, he allowed four runs on four hits, including a two-run homer by Mike Yastrzemski, over two innings. Two days later, Warren entered with a 9-4 lead in the fifth inning and failed to retire a batter, allowing four hits, a walk and a hit batsman, while being charged with five earned runs. All told, his ERA nearly doubled to a 4.63 mark after that outing. The next day, he was placed on the injured list with a forearm strain. Until his recent blowups, Warren had been a feel-good story for the Mets, as he’d finally found a steady role with an organization in his age-30 season. The righty has been very good at stranding inherited runners, allowing just one of 13 to score – but he’s also issued 18 walks in 35 innings. Warren has struggled in particular against lefties, surrendering four home runs and getting torched for an .892 OPS by southpaws. Once he’s healthy again, Warren should still have a spot as a middle reliever in the Mets’ bullpen. (1-3, 4.63 ERA, 1.486 WHIP, 37 K, 35 IP, 0.1 bWAR, -0.1 fWAR).

Tobias Myers: F

For the first five weeks of the season, Myers was one of the most reliable arms on the team. Since then, his season has been nothing short of a disaster. From May 6 to the end of the first half, Myers has allowed 27 earned runs, 36 hits and seven homers over 24 innings. Myers hasn’t had a scoreless outing since May 25 and has allowed at least one earned run in each of his last eight appearances. He has spent most of the last six weeks being shuttled back and forth between Triple-A and the majors. Myers has never been a ground-ball pitcher, but his grounder rate has plummeted to a career-worst 31.6% this year, while his fly ball rate is the highest it’s ever been at 28.6%. His strikeout rate also sits at a career-low 16.7%. Without a clear role on the roster, Myers’ days with the Mets may be numbered. (0-2, 6.26 ERA, 1.391 WHIP, 33 K, 46 IP, 1 SV, -0.8 bWAR, -0.1 fWAR).

A.J. Minter: B+

Minter was excellent in his brief stint with the Mets in 2025, but he missed over a year of major league action after undergoing surgery to repair a torn lat. Since getting activated on May 25, Minter has given the Mets a nice boost, allowing just three earned runs over 19 innings. While his strikeouts are down, Minter has allowed just one walk and held opponents to a .566 OPS. As expected, Minter’s fastball velocity has decreased, and his four-seamer has been hit hard; however, his cutter has been magnificent, holding opponents to just a .167 batting average and .192 xBA. Just like Raley, Minter is on an expiring contract and will likely be traded in the near future. (1-1, 1.42 ERA, 0.842 WHIP, 17 K, 19 IP, 0.5 bWAR, 0.3 fWAR).

Cionel Pérez: C

Once a high-leverage reliever in Baltimore, Pérez made 16 appearances for the Nationals this season before the Mets signed him to a minor league contract in May. He showed flashes of his old self in his first 11 appearances with the Mets, posting a 3.45 ERA and striking out 16 batters against just one walk in 15 2/3 innings. However, the lefty got rocked for four runs and four hits in 1 1/3 innings against the Blue Jays on July 1. In his most recent outing against the Red Sox, Pérez gave up a two-run homer to Wilyer Abreu – the fifth homer he’s allowed in just 20 innings with the Mets. Pérez is mostly pitching in low-leverage innings currently, but he will likely be asked to play a bigger role in the bullpen once Minter and Raley get traded. (1-0, 5.40 ERA, 1.450 WHIP, 23 K, 20 IP, -0.1 bWAR, -0.3 fWAR).