Sheffield took sole possession of third place in the BBL Championship after a 95-75 win over Milton Keynes.
Blake Shelton led the Sharks with 29 points, with Eddie Cage adding 22. Tony Windless led the Lions with 24 points.
Guildford took a share of fifth after an 87-76 win over Leicester. Brian Dux led the Heat with 26 points, while Dean Williams scored 16.
Ajou Deng posted 11 and 15 rebounds. Deginald Erskin and Anthony McHenry led a Riders' rally with 19 points each.