Shane Whitefield and Marcus Burk scored 14 apiece for the Camels (6-6) and Damontez Oliver had 10. Clemons now has 1,669 points to move past Mike Reidy (1960-64) for fifth on Campbell's all-time scoring list.
Campbell went 5 of 10 behind the arc and shot 64.5 percent overall (20 of 31) to lead 49-29 at the half. The Camels finished the game with 11 3s and shot 52 percent to 34 percent for Allen (21 of 61).
The Yellow Jackets had 20 turnovers that were turned into 27 points.
Wichita State tops 1st place UCF 75-67
Markis McDuffie scored 18 of his 23 points in the second half and Wichita State had a 10-2 run down the stretch to knock off UCF 75-67 on Wednesday night, ending the Knights' seven-game winning streak.
Booker helps Long Beach St down UC Irvine with 28 points
Deishuan Booker scored 28 points and distributed six assists and Long Beach State beat UC Irvine 80-70 on Wednesday night.
Brito scores 23, leads Utah State past San Jose State
Diogo Brito scored 23 points with six assists and five rebounds and Utah State defeated San Jose State 81-63 on Wednesday night.