J.B. Bukauskas Makes Major League Debut for Arizona Diamondbacks Posted Apr 21, 2021 Former UNC pitcher J.B. Bukauskas made his major league debut Tuesday for the Arizona Diamondbacks against the Cincinnati Reds. The former 2017 first-round draft pick came out of the bullpen in the seventh inning. Bukauskas’ debut also came on the same night that former UNC teammate Zac Gallen started on the mound for the Diamondbacks. (Chapelboro.com)