Navy is done. Phew. There seems to be an oddly high level of discomfort in the fan base with what was an imperfect but highly effective performance against an annoying opponent. The defense held Navy without a touchdown for the first time since 1998 and held them under 200 total yards for the first time in the Brian Kelly Era. In fact they held Navy to their second lowest output of the year behind only Air Force, who knows a thing or two about how to defend the triple option. The offense started slow but then posted its highest passer rating since the season opener and a whopping 7.1 yards per play overall, which over the full season to date would rank fifth nationally. Some new or nearly-new faces shone, most notably true freshman RB Logan Diggs and redshirt freshman WR-LB-S Xavier Watts. No defenders had their knees carved out.

The win was so comprehensively dominant, in fact, that it earned the rare 100.0% postgame win expectancy from SP+, meaning that in all past games with comparable stat lines for both teams, the team with stats similar to Notre Dame’s had never lost. Not once. I enjoyed the first quarter just as much as the rest of you did, I promise, but after that this game was a two-way domination for the Irish. There’s lots to be happy about as Notre Dame sits 8-1 and in excellent position to land a New Year’s Six bid – and, yes, they remain on the fringe of the playoff discussion as well.

Recapping the methodology for these articles: These aren’t actual SP+ win probabilities, as SP+ creator Bill Connelly doesn’t publish those regularly. He does though publish his SP+ ratings every week for all FBS teams. We use a slightly tweaked version of the formula that Reddit poster rcfbuser (account deleted, pour one out) posted a few years back to approximate the official calculation. The FPI win probabilities are updated weekly by ESPN, so those are the real deal.

SP+ measures offensive and defensive explosiveness and efficiency on a per-play basis. FPI is ESPN’s proprietary metric and is much more of a black box, but we do know that it rests heavily on expected points added, which is a pretty solid advanced stat and also a per-play number.

Post-Week 10 Update – SP+ Matrix

As you move down each column, you find the probability of Notre Dame owning that many wins at that point of the schedule. In the sixth row, for example, you can see that the probability of owning zero or nine wins through nine games is 0%, and of owning eight wins is 100%. So, 8-1. In the last row of the table we’re tracking how much the probability of each win total has changed from the previous week. This is a function of our own outcomes, the quality of play that led to those outcomes, and SP+’s changing perceptions of our past and future opponents.

The 42.2% figure at the end of the Stanford row reflects our probability of winning all the remaining games per SP+. That’s up a bit because it really liked Notre Dame’s performance as noted above, but it’s only up a bit because Navy was a high-probability win to begin with so removing it from the calculation of remaining games doesn’t change much. Virginia is another story; get past that one and we’re looking at around a 70% chance of 11-1.

Post-Week 10 Update – FPI Matrix

FPI is now diverging a little more from SP+ because Stanford, who it remains convinced is better than they are, is one third of the remaining game calculation. As you can see, the models have pretty similar opinions of Virginia and Georgia Tech. Get past Virginia and FPI will project about a 66% chance of going 11-1.

Week by Week Game Trends

SP+

 

FPI

Consecutive impressive weeks in SP+ have the Irish trending strongly in the right direction as the regular season winds down. The Virginia game is big, and in fact could well be the key to earning a New Year’s Six spot. Any given Saturday, etc. etc., but Georgia Tech and Stanford are a pair of 3-6 teams in parallel free fall and should provide little resistance. The Vegas line for this weekend opened at Notre Dame -6 and has dropped down a bit to -5.5; I don’t know for sure but I would imagine action is slow early as bettors would want to have more clarity on Hoos QB Brennan Armstrong’s availability after maybe breaking his ribs a couple of weeks ago against BYU. SP+, which knows not nor cares not for such trifles, as the line at Notre Dame -3.5 – it really likes Virginia’s offense.

If you’re wondering, SP+ has the line for Georgia Tech as Irish -16.5, and for Stanford as Irish -19. That would be fun.