But he admitted that when the Bears faced a 14-point deficit at halftime in Waco, potential reality set in: The reality that a home loss on Saturday could be brutally damaging to Baylor's NCAA tournament hopes.
Instead, Dunn scored a game-high 26 points, including 17 after the break, in leading Baylor to a 70-66 victory.
"No doubt, we had (the consequences of a loss) it in our minds," Dunn said by phone after the game. "We did a better job of just playing defense in the second half.
"The first half, we weren't really playing the ball we wanted to play. Me, having to be responsible, being a senior and the leader of the team, I had to start it up on the defensive end."
The Bears did lock down on the Buffaloes after the break, holding them to 32.4 percent shooting in the final 20 minutes. But Baylor was also an efficient 15-of-25 from the floor during that stretch. The talnted interior duo of Quincy Acy and Perry Jones III took advantage of CU's thin front line, while Dunn ripped the visitors' hearts out with an 11-of-11 second half performance at the free throw line.
A major flaw that has kept Baylor living up to lofty expectations this season has been the ability to take care of the basketball, and Saturday afternoon was a classic example of Good Baylor vs. Bad Baylor.
In the first half, Bad Baylor coughed it up 13 times, while Good Baylor only had five giveaways in the second.
But can Baylor come close to repeating its second half showing for 40 minutes moving forward? Well, the Bears might have to come close to doing so, because even at a solid 14-6 overall and now 4-3 in the Big 12, they have some work to do.
Plain and simple, they're lacking quality wins right now. Opportunities to get them on the horizon are plenty.
The Bears have talent, length and athleticism, and that has never been in question. What they've lacked is a steadying influence running the show on the offensive end, which is what senior point guard Tweety Carter was for them a year ago.
Though not necessarily running the show on Saturday, Dunn took the game over and put Baylor on his shoulders by taking smart shots and running the show.
More of that will be needed.
"I'm excited for the rest of the season and all of the tests at hand," he said. "Usually, me, I lead by example, but now I have to be more vocal for us."