Notre Dame survived a potentially self-inflicted mistake Saturday, one that could have put its perfect season in further jeopardy.
When Pitt's Kevin Harper missed a 33-yard field goal in the second overtime that would have ended the game had it gone in, the Irish had Bennett Jackson and Chris Brown, both of whom wear No. 2, on the field together.
By rule, Notre Dame should have been penalized and the Panthers should have gotten a first down.
"No exception to [the rule]," coach Brian Kelly said during his Sunday teleconference. "It was a coaching mistake. ... We've got to do a better job -- an oversight that can't happen."
Kelly said he noticed the gaffe right after the play.
Pitt ended up kicking a field on its next drive to start the third overtime before Everett Golson rushed for the game-winning touchdown.
Notre Dame had been penalized for a similar mistake once earlier this season, when Dan McCarthy and Justin Ferguson, both No. 15, were on the kick return unit together in Week 2 against Purdue. Ferguson has since changed his jersey to No. 82.
"We have an easy way for us to make sure that this doesn't happen again," Kelly said. "[Jackson and Brown] won't be on the field again. It's on me now, so I'm going to make sure it doesn't happen."
Nichols still hurting: Kelly said tackle Tate Nichols may have taken a step back with a knee injury and will get an MRI this week, though information won't be available until later in the week.