Two key players went down with ankle injuries during practice Tuesday and another offensive tackle also was lost indefinitely to an injury, CSU coach Jim McElwain said.

Junior running back Dee Hart, a transfer from Alabama who was competing for the starting job, and redshirt freshman receiver Elroy Masters, who was singled out for his strong play following a closed scrimmage Tuesday night, both left practice early with ankle injuries, McElwain said afterward. Jordan Benson, a true freshman offensive linemen, suffered a leg injury.

None of the injuries appeared to be season-ending, McElwain said, but all three players could miss the Aug. 29 season-opener.

Hart ran for 18 yards on three carries in Tuesday's scrimmage, while Masters caught three passes for 55 yards, including a 39-yard touchdown catch on a pass thrown by true freshman Coleman Key.

Benson is the third offensive linemen sidelined by an injury. Junior-college transfer Jordan Finley will miss at least the first three games while recovering from a knee injury suffered during spring drills that required surgery, while senior Mason Hathaway suffered a season-ending knee injury during the first week of fall camp.