GRAND JUNCTION, Colo. (KREX) — The Mesa Mavericks opened regionals with a 5-3 win over West Texas A&M. The win eliminates the Buffs and leaves two undefeated teams in the South Central Regional (CMU and St. Edwards). Tomorrow a double header between the two, game one is at 3:00 game two has a start time slated for 7:00.