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.

Don't miss a second of tonight's Orange Bowl with breaking news & real time scoring updates from NBC Sports throughout the game!

Here’s who’s on the call for ESPN’s broadcast of the College Football Playoff semifinals game between Penn State and Notre Dame.

Notre Dame quarterback Riley Leonard left the College Football Playoff semifinal at the Orange Bowl late in the first half and was being evaluated by the Fighting Irish’s medical staff.

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.

No. 7 seed Notre Dame and No. 6 seed Penn State are set to revive their rivalry in the Orange Bowl on Thursday evening with a spot in the College Football Playoff National Championship on the line. This will be the first meeting between two storied programs since 2007 and just the 20th all time.

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

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,