Saint Louis grad and Tennessee Titans quarterback Marcus Mariota is "optimistic" he'll be able to start Sunday's game against the Indianapolis Colts with a playoff spot on the line and potentially an AFC South title.

"I am just trying to get back and finding every way I can to be available," Mariota said Wednesday. "Of course I am optimistic. This is what it's about. We're playing for everything. I am doing everything I can day and night to get ready. You find every little treatment or rehab to get back out there. That's been my main focus."

Mariota suffered a stinger injury in Saturday's game and said he felt numbness in his right side after the hit. He has since been cleared from the league's concussion protocol, but is listed on the team's injury report with a neck/foot injury.