"He can really run like a little guy. He's got a lot of foot action. He can change directions," Diaco said.
Diaco attributes much of the improvement in the sophomore to him learning how to play in the defensive system and working with his teammates, saying his game is maturing.
Tuitt got a tweet earlier this year from former Notre Dame standout Justin Tuck, now with the New York Giants, urging Tuitt to break his school record of 13.5 sacks in a season, set in 2003.
"I remember telling him I'd do my best," Tuitt said.
He on pace to do it. If he can remain productive, he could also have a shot at Tuck's career record of 24.5. He's already looking at ways to get stronger, asking in a tweet recently if anyone with a farm might be looking for some help next summer.
"I've met a lot of really, really big-time country offensive linemen. They're kind of strong, so I thought maybe in the offseason, I might be trying to go on a farm and move some hay or do whatever they did to get stronger," he said.
He's said he has received some interest. For now, though, he's focusing on being part of a defense that has been part of a key role in the strong start by the Irish.
"The stuff we've been able to accomplish, I'm not going to lie, is really, really cool to do," he said.