Jamie Moyer turns 50 this year. He blew out his elbow pitching Winter Ball, had Tommy John surgery, and sat out all of 2011. Now here he is, with a spiffy 2.77 spring ERA, entering his 25th professional season.
The link goes to ESPN, but the video interview is worth the ferry ride 'cross the Styx. As Jim Tracy says in the article of the Moyer experiment, somewhat mysteriously: "You're going to venture into this."