He was helped off the field, and did not return.
It opened the door for Josh Oglesby, the highly-touted redshirt freshman who played the remainder of the game in Carimi's place.
"I felt I stepped in and did the best I could," Oglesby said. "Here at Wisconsin, we're big on ‘next-man-in', so I just took that mentality."
Oglesby said he felt like he played fairly well, particularly given that his introduction to the first-team offense came against the Buckeyes and not a lesser-profile opponent.
"It really adds to my confidence level to know that I can go out and play among the Big Ten's elite," Oglesby said.
The 6-foot-7, 328-pound Oglesby was rated the No. 1 offensive tackle in the nation by Scout.com coming out of high school in 2007, and had seen time on UW's jumbo package.
Pending the severity of Carimi's injury, Oglesby might need to get ready for even more responsibility.
"It does (feel like forever)," Oglesby said, "but I wish it would have come on better terms."
Falling at home
For all the ups and downs the University of Wisconsin has endured during Bret Bielema's three years as the head coach, one thing has remained constant - the Badgers had not lost at Camp Randall Stadium with Bielema at the helm, in 16 games.
But such a statistic didn't faze Ohio State, which has now won 12 consecutive road contests.
Something had to give, and for the first time in Bielema's career, he walked off the Camp Randall turf as the losing head coach.
"It is tough to lose this way," Bielema said, when asked of ending the streak. "It was nice to be an undefeated coach at home, but it's not a stat I'm looking for. I was just looking for wins this year, and unfortunately we haven't been able to get two of them."
This was the first UW loss since Nov. 12, 2005, a 20-10 defeat against Iowa. That was the season finale, and the last home game of then-coach Barry Alvarez's career.
With tight end Garrett Graham missing his second consecutive game with a foot injury, H-Back Travis Beckum's presence was sorely missed last week at Michigan, when he could only play limited time in the fourth quarter as the game lay in the balance.
Beckum claims to be back to 100 percent, and looked the part Saturday night in leading the Badgers with six catches for 60 yards. But that was not of any consolation to the All-American, who came back to Wisconsin for his senior year despite a chance to be a first-round selection in last April's NFL Draft.
"I guess there's players that can say, yeah, I'm satisfied with how I played, but we lost," Beckum said. "I think that's what it comes down to. My goals, when I decided I'm coming back, were to win a Big Ten championship, and losing these ball games are kind of making that fade away."
Bielema said this was the first time since early in fall camp that Beckum could participate in every part of practice throughout the week.
"These are games that Travis loves to compete in," "I thought he made a couple of great catches today, I think he's finally over the hump, he doesn't have any concerns about how his leg is."
UW had been 21-1 in their last 22 night games, including 11 straight victories … Clay, a high-potential redshirt freshman himself, led the Badgers in rushing for the first time in his career, with 69 yards on 10 carries … tight end Mickey Turner's 9-yard touchdown grab was the third catch of his career, and his first score … kicker Philip Welch made a nice open-field tackle on Maurice Wells to save a TD in the third quarter … Jim Tressel is now 3-3 against the Badgers. Wisconsin had previously been the only Big Ten school with a winning record against Tressel in his eight-year tenure as the Buckeyes' head coach.