Keifer Sykes scored 23 points, hitting all six of his free throws in the final 32 seconds, as Green Bay rallied from a 13-point second-half deficit to beat Cleveland State 66-59 Friday night and sweep the season series.
The Phoenix (14-12, 8-5 Horizon League), who also won 77-50 on Jan. 19, trailed 40-27 with 19:11 left.
Greg Mays' layup sparked a 15-0 spurt, giving Green Bay a 42-40 lead with 12:57 remaining, but Cleveland State (12-15, 4-9) promptly regained the advantage on a jumper by Luda Ndaye and Bryn Forbes' 3-pointer.
Sykes and Alec Brown then combined for 13 points as the Phoenix built a 55-51 lead. Brown, who finished with 17 points, hit two 3-pointers in the spree.
After the Vikings closed to 58-57 with 1:31 left, Jordan Fouse's tip shot and Sykes' free throws sealed it.
Charlie Lee's 18 points led Cleveland State, which has lost three straight.