UNC Baseball: Tar Heels in the Pros Update Posted Jun 3, 2023 Zac Gallen is one of the best pitchers in the National League for the Arizona Diamondbacks. Gallen is 7-2 this season with a 2.72 ERA and 82 strikeouts. Fellow Tar Heel Cooper Criswell got called up in May and has made 4 appearances on the mound for Tampa Bay. Trevor Kelley also pitches for the Rays and has made 8 appearances with two starts. (Keeping It Heel)