Astros veterans aim to bring out the best in J.B. Bukauskas Posted Mar 11, 2019 J.B. Bukauskas boasts a repertoire most other pitchers would promote without hesitation. His four-seam fastball topped at 100 mph during the Arizona Fall League. Bukauskas’ slider sits in the high 80s, a devastating putaway pitch with plus depth and break. The pitch was Bukauskas’ calling card when Houston selected him 15th overall in the 2017 MLB Draft. (Houston Chronicle)