Felder, who made 14 of 16 free throws, has scored 20-plus in all 12 of Oakland's games this season.
A 3-pointer by Clemmye Owens V gave Chicago State a 63-60 lead - its first since 7-4 - but they went without a field goal for nearly four minutes during Oakland's 9-0 run. Back-to-back Chicago State 3-pointers made it a three-point game with 1:15 left but Felder made 6 of 6 free throws to seal it.
Fred Sims Jr. led Chicago State (4-11) with 18 points. Trayvon Palmer added 10 points and 11 rebounds.