Bucknell put Boston University’s Patriot League coronation on hold with a 63-53 victory over the Terriers on Senior Day at Agganis Arena.

The Terriers (20-9, 13-3) squandered an opportunity to clinch a share of the Patriot League title in their first season in the conference. BU can gain sole ownership of the title and secure homecourt advantage throughout the league tournament if the Terriers win out on the road at Army and Holy Cross.

“We have to come back and be ready to play, but we will be ready,” BU coach Joe Jones said. “It is disappointing, but we have to put it behind us, and the thing we have to be ready to do is compete. If we compete, we will be in good shape.”

Bucknell (14-13, 9-7) avenged a three-point home loss to the Terriers on Jan. 25. BU suffered its first loss when holding the opponent to under 70 points, but the blame fell on the Terriers’ lackluster offense and poor rebounding.

BU shot 16-of-50 from the floor (32 percent) and made a dismal 4-of-18 from behind the arc. The Bison shot 43.6 percent from the floor and enjoyed a 46-27 advantage on the boards that produced 15 second-chance points. Bucknell got 34 points off the bench to 20 for BU.

BU was led by forward Nathan Dieudonne with 13 points, while guards Maurice Watson Jr. and John Papale combined for 22. Guard D.J. Irving was hampered by the flu and was held to three points and zero field goals.

Bucknell guard Cameron Ayers led a balanced attack with 11 points.

“That was just an old-fashioned butt-whipping,” Jones said. “I thought from the start we had no energy, but that’s not an excuse at all; they just outplayed us. They played with more energy and you’ve got to play this game with emotion, and we did not play with enough emotion. It’s just disappointing that it happened now.”

The Terriers briefly assumed control of the game early in the second half, as Dieudonne drained two open 3-pointers to fuel a 10-2 run that put BU up 33-24.

The Terriers’ inability to clear the defensive glass gave the Bison easy putbacks and open jumpers. Bucknell countered BU’s quick second-half start with a 16-5 run, and took a 40-38 lead on a trey by forward D.J. MacLeay with 7:53 to play.

“We got back into this with offensive rebounds and toughness on offense,” Bucknell coach Dave Paulsen said. “A lot of guys made some offensive rebound plays.”