Rashad Madden (12 points), Coty Clarke (11) and Anthlon Bell (10) also reached double figures for the Razorbacks (19-9, 8-7 SEC), who also upset the Wildcats last month in overtime.
Arkansas reeled off a fourth straight win and sixth in seven games.
Kentucky (21-7, 11-4) lost a second straight in extra time overall despite 16 points and 13 rebounds from Willie Cauley-Stein.
Andrew Harrison and Julius Randle each added 14 points.
Swim Week Miami Beach 2014 [PHOTOS]