It took Tom Izzo just 30 seconds against Nebraska to realize something was wrong with Matt Costello.

The sophomore forward had just given up a 3-pointer right out of the gates to the Cornhuskers' Walter Pitchford on a play the Spartans had gone over continuously in the scouting report. Izzo pulled Costello out of the game immediately for some subtle reminders and subbed him back in just as quick.

The clock still read 18:25 in the first half, but the damage was already done. Costello's lack of focus and energy on just that first play became an epidemic that the No. 13 Spartans (21-5, 10-3) were unable to overcome, losing 60-51 at home to Nebraska.

Costello was nowhere to be found following Sunday's game. His teammates faced the music while he faced the proverbial mirror.

Two days later, he was ready to admit his mistakes.

"I just didn't play very hard, to be honest with you," Costello said. "I played out of it, I didn't respect Nebraska at all and I got my nose shot out. Pitchford killed me. He was on a mission. He's from Michigan, wanted to play at Michigan State, didn't get the opportunity and that was his revenge game.
"He took advantage of me because I was just chillin'."

Costello finished with just four points on 1-of-2 shooting and missed a point-blank layup. He played just 13 minutes -- his lowest since Jan.7 -- due to his inability to guard Nebraska's shooters.

He met with Izzo to better diagnose the issue.

"I had a talk with coach and decided I need to change my mindset," Costello said. "I just need to change my mindset is what I need to do. I mean, I've been playing alright lately, but against Nebraska I just came out like I did sometimes in high school, like it was going to be a walk in the park. It wasn't, and we got our butts handed to us."

Izzo was clearly upset with Costello during the game. Costello said reviewing the film wasn't particularly pleasant, either. But while Izzo won't forgive gaps in effort, his postgame evaluation revealed that some issues in the post -- at least defensively -- weren't entirely Costello's doing.