PHILADELPHIA -- The Mets¡¯ bullpen, a source of resilience throughout this season, will need to recover from yet another loss.

Right-hander Dedniel Núñez is done for the season due to a strained flexor tendon in his right arm. N¨²?ez received a platelet-rich plasma injection in the tendon and hopes to avoid surgery, but the Mets won¡¯t know how viable that might be until his body has time to respond to the PRP shot.

¡°Everything is on the table, but right now, we thought that was the best route to go with the injection here,¡± manager Carlos Mendoza said. ¡°Hopefully that works, and then we don¡¯t have to worry about surgery. But, too early to tell.¡±

N¨²?ez had been a revelation for the Mets in the middle of the season, producing a 2.00 ERA with 35 strikeouts over 27 innings from May 28 through July 23. But he went on the injured list shortly thereafter with a right pronator strain, spent a month there, then returned for a single appearance on Aug. 24.

Afterward, N¨²?ez complained to team officials that he wasn¡¯t responding well from his throwing sessions, prompting another examination and trip to the IL. He subsequently went for a second opinion, which confirmed what president of baseball operations David Stearns referred to as a ¡°strain¡± of the tendon. A PRP shot was the recommended treatment.

¡°Disappointing,¡± Mendoza said. ¡°He¡¯s been huge for us, and we had hopes that we were going to get him back, and that¡¯s not the case.¡±

With N¨²?ez done for the year, the Mets will continue to rely on a mix of Phil Maton, Reed Garrett, Danny Young, Jos¨¦ Butt¨® and others to set up closer Edwin D¨ªaz.