Stripling suffered the injury covering a kickoff in the first quarter of the Bulldogs' 29-27 loss. He was carted off the field.
Richt also said Sunday sophomore cornerback Branden Smith is doubtful for this week's game against Tennessee after suffering a concussion in the game.
MICHIGAN STATE: Saturday's big win over Wisconsin was barely over and already Michigan State was eyeing next weekend's opponent.
It's the game the Spartans look forward to every season -- and this year's matchup with Michigan is shaping up to be even more special than usual.
"That is the biggest game of the year, bottom line. It just is, there isn't much more to say," Spartans linebacker Greg Jones said. "My focus went to Michigan once the seconds ticked off of the clock. It wasn't really long."
It's been more than a decade since the Spartans and Wolverines entered their matchup unbeaten, and that's exactly what's in store when they meet this weekend in Ann Arbor. Michigan State held off Wisconsin 34-24 Saturday to move up to No. 17 in the AP poll, one spot ahead of Denard Robinson and Michigan.
BOSTON COLLEGE: Quarterback Chase Rettig is day to day with a sprained left ankle. Rettig was injured in Saturday night's 31-13 loss to Notre Dame. It was the college debut for the freshman.
MIAMI: Once the points stopped flowing against Clemson, Miami relied on its defense to avoid an upset in its Atlantic Coast Conference opener.
And that might be the difference this season as the Hurricanes chase their first league title and a spot in the BCS.
"Our defensive line has been doing a tremendous job, and our linebackers have been wiping out the run," cornerback Brandon Harris said after Miami's 30-21 victory. "If we keep playing this way on the back end, I believe we're going to have success."
OREGON: As much as coach Chip Kelly downplayed the significance of Oregon's victory over Stanford, it sure vaulted the Ducks into the national championship conversation.
The Ducks recovered from a slow start Saturday night to defeat the Cardinal 52-31.
As a result, Oregon (5-0, 2-0 Pac-10) jumped over Boise State to No. 3 in the rankings, touching off a heated debate between fans of the Ducks and the Broncos.
Boise State (4-0, 1-0 WAC) defeated winless rival New Mexico State 59-0 on Saturday, extending its winning streak to 18 straight games. But the Broncos are up against the perception that they have an easier schedule than the other teams bidding for the national title.