Langevine hit 12 of 14 shots. He added eight rebounds and three blocks. Russell also had six rebounds for the Rams.
Jeff Dowtin had 10 points for Rhode Island (14-14, 7-9 Atlantic 10 Conference), which ended its four-game road losing streak.
Obi Toppin tied a season high with 26 points plus 11 rebounds and seven assists for the Flyers (19-10, 11-5). Ryan Mikesell scored a career-high 23 points and had 11 rebounds. Jalen Crutcher had six assists.
Toppin tied it at 63 with 40 seconds left in regulation and neither team scored in the final minute of overtime.
The Rams leveled the season series against the Flyers with the win. Dayton defeated Rhode Island 77-48 on Feb. 9. Rhode Island plays Saint Joseph's on the road on Tuesday. Dayton matches up against La Salle at home on Wednesday.
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This was generated by Automated Insights, http://www.automatedinsights.com/ap, using data from STATS LLC, https://www.stats.com
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