The Phillies placed him on the disabled list before Friday's series opener against the Rockies at Citizens Bank Park. He said his back has not improved, and he will not play again this season.
Polanco has a $5.5 million mutual option or a $1 million buyout on his contract for 2013, but the Phillies will not pick up their side of the option. But Polanco said he remains hopeful he can play next season, maybe even with the Phillies.
"I'm going to begin a rehab to give myself a chance to try to come back next year," he said. "If I rehab and it still hurts, I don't know. But who wouldn't love to play for the Phillies? This is one of the best organizations ever."