Listed Measurements: 6-foot, 205 pounds
2017-18 year, eligibility: Sophomore with four years of eligibility remaining including the 2017 season.
Depth chart: Entering spring practices, some wondered who would back up junior quarterback Brandon Wimbush. Would senior Montgomery VanGorder’s time invested make the difference? Would freshman Avery Davis need to arrive and be immediately ready for action? Could Book prove himself worthy of being one play away from taking snaps? Book could and did just that.
Recruiting: When former Irish offensive coordinator and quarterbacks coach Mike Sanford arrived from Boise State in 2015, he already had a quarterback target in mind.
Notre Dame 99-to-2: No. 12 Ian Book, quarterback
