Mariano Rivera will be back in pinstripes next year, The Post has learned. The iconic closer told Yankees general manager Brian Cashman on Friday that he wants to return in 2013. Rivera missed almost the entire 2012 season with a torn ACL and, after initially saying he definitely wanted to come back, he was less sure about it in the last few weeks. Now all speculation has ended. "Rivera contacted us and wants to play," Cashman told The Post.