Mets designate two-time All-Star pitcher for assignment after rough outing

The Mets have designated right-handed pitcher Julio Teheran for assignment, according to an announcement from the club. In a corresponding move, the team selected right-hander Dedniel Núñez from Triple-A Syracuse.

Teheran and the club just agreed to a one-year, $2.5M deal last week, but Tim Healey of Newsday reports today that the contract was non-guaranteed and prorated with Teheran collecting $54K for his brief stint on the roster, though Healey also adds that Teheran’s prorated deal will continue to pay him while he’s in DFA limbo.

Teheran took the ball for the Mets Monday night against a tough Atlanta lineup and clearly struggled. It took him 68 pitches to get through 2 2/3 innings, allowing four earned runs via six hits and two walks, striking out three in the process.

The Mets were put in a position to need an extra starting pitcher by some recent injuries. They knew long ago that David Peterson had hip surgery and wouldn’t be an option early in this season, but then Kodai Senga was diagnosed with a moderate posterior capsule strain in his throwing shoulder in late February. That left a spot open for a depth arm like Tylor Megill, Joey Lucchesi or Jose Buttó. Megill won that job but then suffered a right shoulder strain after just one start.

Neither Lucchesi nor Buttó could be recalled right away to replace Megill since they were optioned to start the season and an optional assignment comes with a 15-day minimum stay. An exception that rule is allowed for a double-header, which is why Buttó was allowed to be the club’s “27th man” and pitch on April 4, but he wasn’t allowed to stay after due to the 15-day rule. Teheran filled that rotation job for one outing but it seems Buttó will be coming up this weekend once he’s eligible, per Tim Healey of Newsday and Mike Puma of The New York Post.

The Mets will now have a week to trade Teheran or try to pass him through waivers. The latter scenario will largely be a moot point since Teheran is a veteran with well over five years of major league service time, meaning he can reject an outright assignment in favor of electing free agency.

Teheran had a bit of a bounce-back year in 2023, tossing 71 2/3 innings over 11 starts and three relief appearances with a 4.40 earned run average. He only struck out 17.4% of batters faced but limited walks to a 4.5% clip. Those results aren’t super exciting but still were a bit of a return to form for him. He didn’t pitch in the majors at all in 2022 and was only allowed to take the ball once in 2021 after he posted an ERA of 10.05 for the Angels in the shortened 2020 season.

Prior to that, he was a mainstay in the Atlanta rotation, making 222 starts from 2013 to 2019 with a 3.64 ERA, 21.1% strikeout rate and 8.1% walk rate. Last year’s performance with the Brewers wasn’t quite at that level but was a turnaround after three challenging years. Given the enormous amount of pitching injuries around the league right now, it’s possible that Teheran will garner interest from clubs in search of innings.

Núñez, 28 in June, has not yet appeared in a major league game but he does have one year of major league service time. That’s because the Giants selected him from the Mets in the 2020 Rule 5 Draft but he required Tommy John surgery before the 2021 season started and he eventually spent all of that year on the injured list, with the Giants returning him to the Mets after that year.

He split 2023 between Double-A and Triple-A with a 5.53 ERA in 57 innings, striking out 26.8% of batters faced but also walking 12.3%. He has thrown 3 1/3 scoreless innings at Triple-A so far this year, with five strikeouts and just one walk. Back in February, Eric Longenhagen of FanGraphs mentioned Núñez as a pitcher who could debut for the Mets this year thanks to his high-90s heat, but also expressed concerns about the lack of control.