Dayton kept its Atlantic 10 conference tournament hopes alive and put Richmond's postseason fate at risk with a 78-74 victory Saturday.
The Flyers led by seven at halftime, but Richmond scored the first five points of the second half to get back in the game. The Spiders drew even for the last time at 58-58 with seven minutes to play, but they could never take the lead.
Khari Price and Dyshawn Pierre each made a pair of free throws in the final seven seconds to keep the Spiders from having the chance to tie.
Kevin Dillard scored 21 points for Dayton (16-12, 6-8 Atlantic 10), and Devin Oliver added 19. The Flyers survived the Spiders' charge by excelling at the foul line, making 20 of 24 attempts.
Richmond (17-12, 7-7 A-10), which would have locked up a spot in the Atlantic 10 tournament with a win, got 22 points, seven assists and three steals from Cedric Lindsay. Darien Brothers broke out of his shooting slump with 19 points, spurred by a 4-of-8 performance from three-point range.
The top 12 teams in the 16-team Atlantic 10 make the conference tournament. Dayton and George Washington, which lost to Saint Louis on Saturday, are tied for the final spot with six league wins.