The Greyhounds (16-8, 8-4 Metro Atlantic Athletic Conference) led by two late in the second extra session, but Malcolm Lemmons tied the game with a pair of free throws with three seconds to play. Brooks then hit the winning points on a pass from Erik Etherly.
Anthony Winbush forced overtime with a pair of free throws with 35 seconds left in regulation. Niagara held for the last shot, and Juan'ya Green missed a 3-pointer as time expired. The Greyhounds then raced out to a 76-68 lead in the first overtime, but the Purple Eagles came back, and this time Green managed to connect on his 3-pointer with nine seconds to play.
Robert Olson scored 23 points to lead the Greyhounds, but he fouled out with 7:27 to play in regulation. Winbush had 13 points and 13 rebounds.
Green and Antoine Mason each had 23 points to lead the Purple Eagles.
Olson wasn't the only player in foul trouble, which isn't surprising given that 52 fouls were called. Jarred Jones fouled out in the first minute of overtime.
Devon White fouled out for Niagara in regulation, with Ameen Tanksley picking up his fifth on the first possession of overtime.
UMBC 68, Maine 67: A 3-pointer by Brian Neller with two seconds left gave the host Retrievers (6-16, 4-5 America East) the win.
Zarko Valjarevic made a 3-pointer with 10 seconds left to put the Bears (8-14, 3-6), who led by as many as 14 points in the first half, up by two.
After a Bears' 30-second timeout, the Retrievers set up for the last shot, with Neller coming up clutch at home.
Mount St. Mary's 91, Sacred Heart 82: Rashad Whack poured in a career-high 35 points to pace the host Mount (9-12, 4-6 Northeast Conference) past the Pioneers.
Whack scored 19 points over the first 6:45 of the game to spark the Mountaineers to a 23-9 advantage. After opening the game with back-to-back 3-pointers, Whack closed the run by scoring 11 consecutive Mountaineers points, hitting three more triples while adding a pair of free throws in that stretch.
Sacred Heart fell to 8-13, 6-4.
But he ended up with his first college game-winner as his basket at the buzzer lifted Hampton over the Bears (6-12, 3-4).
The Pirates trailed 59-45 with 8:04 left in the game before mounting a comeback to stun Morgan State.
Okoroba took an inbounds pass with five seconds left from reserve Ke'Ron Brown in the lane for the winning basket.
Anthony Hubbard led Morgan State with 16 points and Justin Black had 15.
North carolina A&T 46, UMES 44: Austin Witter went 1-for-2 from the line with 33 seconds left to pull the Hawks (1-16, 1-5 MEAC) to within one, but no closer. Lamont Middleton made a free throw with six seconds left for the final margin. The Aggies (11-11, 4-3) led for most of the game, at one point by as many as 16 points.
Troy Snider finished with 17 points for UMES.