Starting QB Book could miss Notre Dame’s game against FSU
This could be huge news for the Irish and for the Playoff race. As new CFP No. 3 Notre Dame prepares to host Florida State, Irish Sports Daily reports starting quarterback Ian Book will miss the game due to multiple midsection injuries. 247 Sports reports he’s expected to miss due to a rib injury suffered against Northwestern the week prior. Book took over for incumbent starter Brandon Wimbush after Week 3, sparking some significant overall improvement by the Irish. Going by S&P+’s offensive percentile performance rating, the Irish had two poor showings in their first three games of the year, but only one (Pitt) in the six Book has started. The Irish would go back to Wimbush against the Noles, against whom they’re favored by 18 and have been picked to cover. Wimbush isn’t a bad player and made some great plays in 2017, but this is obviously a blow for the Irish. There are some significant differences in comparing Book to Wimbush. For one, accuracy. While completion percentage is not a perfect barometer of accuracy, Book literally leads the nation in completion percentage against FBS teams at 74.5 percent. Wimbush, on the other hand, is at 55.3 percent, which ranks 93rd nationally according to cfbstats.com. Using Bill Connelly’s stats, the difference is even more stark. Book’s Marginal efficiency is 13.3 percent, while Wimbush’s is just 3.0. And despite being a little less athletic than Wimbush, Book is sacked about half as often (3.8 percent to 7.3). As a runner, the two QBs have been roughly even. Book has a higher yards/carry number at 4.8 to 4.1, but Wimbush has a slightly better marginal efficiency rate at -3.5 to -3.7. We’ll update this post with more information as it becomes available.