The Colonials (12-9, 7-1 Northeast Conference), who have won four straight, had let a 12-point lead midway through the second half slip down to 47-45 when Wagner's Elijah Davis made a pair of free throws with 1:32 to play. Williams knocked down his late-in-the-shot clock jumper with a minute to go, Josh Williams then made four-straight free throws and Matty McConnell made four straight.
Robert Morris led 24-19 at the half, when a total of 11 fouls were called and one free throw was shot. There were 24 fouls in the second half and Wagner went 15 of 16 from the line and RMU 15 of 17. Both teams shot less than 35 percent.
Romone Saunders scored 16 points for the Seahawks (9-10, 4-4), including three free throws and a 3-pointer in the last 10 seconds to force RMU to make free throws.
No. 10 Seton Hall looks to regroup against Providence
Myles Powell has been the unquestioned leader in No. 10 Seton Hall's run to the top of the Big East Conference.
Missouri eyes breakthrough, but No. 11 Auburn is on a roll
Four victories during Auburn's current seven-game winning streak have come in overtime, leaving the No. 11 Tigers to credit not only sound fundamentals, but strength coach Damon Davis, too.
No. 9 Maryland next faces revived Michigan State
Big Ten Conference-leading Maryland, the No. 9 team in the nation, travels to Michigan State on Saturday to meet the team most experts had expected to be atop the conference by this time of year.