A year ago, Brad Keller was trying to win a job with the Cubs as a nonroster invitee to spring training. Now, he's a key member of the Phillies' bullpen on a two-year contract. And in a few days, he will join the most talented U.S. team ever assembled for the World Baseball Classic. Keller sat down with "Phillies Extra," The Inquirer's baseball podcast, to discuss how much has changed in a year, what led him to Philadelphia, why he believes he can duplicate his success in 2025, and more.