Before joining the Giants, Allen played for the Atlanta Falcons in the preseason. In his 2002 NFL season, Allen made 63 punts for 2,326 yards with 2,045 net yards and an average 36.9 yards per punt. He is infamously known for attempting to pass to Rich Seubert, after a botch snap from Trey Junkin, on the last play of the Giants-49ers NFC Wildcard game on January 5, 2003, which fell incomplete, ending the Giants' season. Another factor in the failed play is a pass interference penalty that wasn't called. Had the penalty been called, the Giants would have had another chance to kick. This play ended up being #10 on NFL Top 10's Top Ten Meltdowns and Top Ten Controversial Calls at #7.