Jaguars running back Leonard Fournette says he believes his sprained right ankle will not keep him out Sunday against Indianapolis, but said "it's up to my coaches if they're going to let me play or not."

Fournette said Thursday that he ran for the first time since he was injured late in the Jaguars' 27-17 loss to the Los Angeles Rams last Sunday. He's expected to do some change-of-direction work Friday to see if his ankle can handle the strain.

If it is up to Fournette, he'll be on the field against the Colts.

"[The injury] wasn't nothing too serious," he said. "Everything was progressing, so just taking it a day at a time right now."

Fournette was injured when he was tackled by Rams cornerback Trumaine Johnson on a first-down run with 9:58 to play. His foot appeared to get caught underneath him as he was being brought to the ground. He got up and tried to hop to the sideline before he went back to the ground.

Coach Doug Marrone said Fournette was cleared to return to the game, but he was not on the field during the Jaguars' last possession. Not having Fournette would obviously be a significant loss because he is the key to the Jaguars' offense, which leads the NFL in rushing (165.8 yards per game).