Fatts Russell had 18 points for Rhode Island (7-7, 4-3 Atlantic 10 Conference). Antwan Walker added 17 points and nine rebounds.
George Mason scored 26 second-half points, a season low for the team.
Jordan Miller had 22 points for the Patriots (6-6, 2-4). Tyler Kolek added 13 points. Javon Greene had nine rebounds and five steals.
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