Ex-Mets pitching coach Phil Regan has filed a lawsuit against the team ... claiming the only reason he was booted from his gig in NY nearly four years ago was because he's old.
The 85-year-old baseball lifer spelled out his allegations in a new lawsuit, obtained by TMZ Sports, alleging the age discrimination happened after he took over the interim pitching coach role in the middle of the 2019 season.
Regan, in the suit, says after he filled in for the fired Dave Eiland, the team saw immediate results.