Kyle Farnsworth has found a second career ... the ex-MLB pitcher fell in love with bodybuilding, and is absolutely jacked now!!
The 46-year-old former New York Yankees pitcher -- who spent 16 seasons in the big leagues -- showed off his incredible physique on social media Tuesday.
Kyle posted a shirtless photo of him in a mirror ... showing off his massive arms, legs and chest, and, it's vastly different from what he looked like when he was a pitcher.
"Very rare gym bathroom selfie," Kyle wrote on Twitter.