Lewis finished with 25 points, including four 3-pointers, and a career-high 12 rebounds. Grady had 24 points on 8-of-13 shooting, and Charlie Lee chipped in 12 for the Vikings (13-10, 7-2 Horizon). Cleveland State shot 51.9 percent in the first half and 64.7 percent in the second.
The Vikings led 32-21 at the half after holding Green Bay to just eight points over the final 8 minutes before the break. The Phoenix managed to close within six points with 15 minutes left to play, but nine straight put the Vikings back up by double figures, and they led by 17 with 6:16 on the clock.
Carrington Love scored 14 points to lead Green Bay (17-5, 6-2) while Greg Mays added 13.