St. John’s knew they couldn’t stop Doug McDermott, but they slowed him down enough to score an upset of nationally ranked Creighton Sunday.

D’Angelo Harrison scored 19 points, including the go-ahead 3-pointer with 2:08 to play, and St. John’s beat No. 12 Creighton 70-65 on Sunday night for its sixth win in seven games.

Chris Obekpa tied his career high with 11 points for the Red Storm (15-9, 5-6 Big East), who avenged the only loss during that seven-game stretch.

Doug McDermott matched his nation-leading average with 25 points for the Bluejays (19-4, 9-2), who had won 14 of 15 coming in and had been tied for first in the conference with Villanova. McDermott didn’t score over the final 8:40.

McDermott had 39 points when the teams met two weeks ago, including a long 3-pointer with 2.4 seconds left for a 63-60 victory. The Bluejays led by 18 points with 12 minutes to play in that one and were barely able to escape with the win at home.