 The Rally Squirrel was instantly adopted by the fans as the postseason mascot, and thousands of rally squirrel T-shirts were sold.His Twitter account started, and by October 6 it had over 11,000 followers; by October 20, it had over 27,500 followers.The October 7, Game 5 winner-take-all in the NLDS pitted Cardinals' ace Chris Carpenter vs. Roy Halladay, his best friend off-the-field for the Phillies, at Citizens Bank Park.