While there are several reasons why Northwestern lost at home, some of the biggest reasons explained by head coach Pat Fitzgerald in the post-game press conference were a lack of focus on defense, turnovers, and mental errors.

Northwestern followed up a stellar 31-28 win over Nebraska in Ireland in Week 0 with a disappointing defensive performance in its 31-23 loss at home versus Duke.

The defense of Northwestern allowed Duke to account for 461 total yards, with 221 of them coming from the rushing game. Northwestern’s defense allowed an average of 18.5 yards per pass with one of the key passes coming from a bobbled pass given up by the secondary.

Duke only turned the ball over once, while Northwestern turned the ball over three times.

Northwestern was also overpowered at the line of scrimmage as Duke’s defense accounted for 7 tackles for loss, 2 sacks, and 14 pass breakups.