GAINESVILLE, Fla. -- Florida linebacker Brandon Spikes, who leads the team in tackles and sacks, injured his left groin against Arkansas.
Team trainers taped his groin on the sideline, but Spikes did not return in Saturday's 23-20 victory over the Razorbacks.
Spikes, slowed earlier in the season by tendinitis in his left Achilles tendon, entered the game with a team-high 32 tackles and three sacks. The top-ranked Gators already were without both starting defensive tackles. Lawrence Marsh (ankle) and Jaye Howard (knee) did not dress against Arkansas.
Arkansas was without running back Michael Smith, the team's leading rusher.
Smith tweaked his right hamstring last week against Auburn. He rushed for 145 yards in the 44-23 victory.
He came out in full pads during pregame warmups Saturday in Gainesville and moved around without any noticeable problems. But coach Bobby Petrino opted to keep him sidelined against the Gators.
Smith has 50 carries for 325 yards and two touchdowns this season. Dennis Johnson started in his place.
Information from The Associated Press was used in this report.