Notre Dame star quarterback Riley Leonard returned in the third quarter of the Orange Bowl on Thursday after entering concussion protocol late the first half following a big hit. Leonard's brief absence injected some uncertainty for the 7-seed Fighting Irish in their College Football Playoff semifinal battle with 6-seed Penn State.

Notre Dame QB Riley Leonard suffered an injury vs. Penn State in College Football Playoff semifinal at the Orange Bowl.

Notre Dame quarterback Riley Leonard briefly went out of the game, then returned to find the end zone in the College Football Playoff semifinal against Penn State on Thursday night at the Orange Bowl.

Notre Dame quarterback Riley Leonard was ushered off the field by officials after a possible concussion in the Orange Bowl against Penn State, but returned.

Notre Dame quarterback Riley Leonard exited the second quarter of the College Football Playoff Orange Bowl semifinal game against Penn State with an apparent he

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Follow the action live as the Fighting Irish and Nittany Lions face off in south Florida with a spot in the College Football Playoff title game on the line.

Notre Dame heads to halftime down 10-3 against Penn State and perhaps without its starting quarterback for the second half

Penn State was unable to corral Oregon’s offense in the Big Ten Championship though, allowing 496 total yards while dropping a 45-37 decision to the then undefeated Ducks. The Nittany Lions eviscerated SMU in the first round of the CFP Playoff,

Notre Dame vs. Penn State in CFP Semifinal Orange Bowl at Hard Rock Stadium. Follow along for live scoring updates