Jalen Jackson added 12 points and Kemy Osse sank the go-ahead 3-pointer for Little Rock, which improved to 5-0 and tied a school record for best season start. Hagins shot 6 of 10 from the field and was 3 for 4 from long range.
Little Rock trailed by 12 in the first half but Hagins' 3-pointer sparked a 15-0 run that stretched across both sides of the break to make it 36-33 with 13:40 to go. Tulsa responded with an 11-5 burst to reclaim the advantage but the Trojans stayed close and took the lead for good with Osse's 3 that made it 49-47 with 7:48 left.
James Woodard led Tulsa (4-2) with 16 points, D'Andre Wright added 14, Rashad Ray had 11 and Marquel Curtis 10.