Swing big with the Marucci Cat 9 Senior League USSSA Baseball Bat (-8). This baseball bat is made from 3-stage, thermal processed AZR alloy with a 2-piece hybrid construction for responsive action. The Longitudinal Groove System⢠(LGSâ¢) technology boosts your field performance, while the micro-perforated soft-touch grip allows for comfortable use. Marucci Cat 9 Senior League USSSA Baseball Bat (-8) Red/Blue - Bbcor/Senior Bats at Academy Sports