"It's crossed my mind, just because I was there. But more than anything, knowing all those guys -- you want to root for them," Warren said. "A lot of them are my friends, and I got to know a lot of them really well. It'll be fun just to sit back and root for them and see how they do. I think, how complete their team is, they have a really good shot at doing this."
Warren, 29, began the year with the Cubs after being traded with a player to be named (infielder Brendan Ryan) on Dec.