"What I saw was that guys were finally figuring out the concepts that we're running," he said at the Lerner Theatre on Thursday, May 8. "And now it's about the details that makes the play great. Guys are starting to love it.
"Guys are starting to show the passion they need to show for us to be a good football program."
Even eight hours of spring practice film couldn't answer all of the remaining questions. Hazell still hasn't named a starting quarterback between Danny Etling, who started eight games last year as a true freshman, sophomore Austin Appleby and early enrollee freshman David Blough.
But between increased running back production and a promising senior season for defensive end Ryan Russell, Hazell is optimistic.
"I am so proud of our football team right now, how hard they've worked," Hazell said. "They've made tremendous strides between January and today. It's fun to watch the growth of our football team."
As Hazell was in the heart of Notre Dame territory, the conversation inevitably turned toward the Irish. Purdue will meet Notre Dame at Lucas Oil Stadium in Indianapolis for the Shamrock Series game Sept. 13.
"It's always great to play Notre Dame. That's a rivalry that goes back many, many years," Hazell said. "That's what makes this year so special because we won't get to play them for another five, six years."
Hazell enters his second season as Purdue's head coach with a fresh perspective and an important lesson learned from the woeful 1-11 campaign.
"You learn that you got to stay the course," he said. "A lot of times you don't see the gradual success that you need to see. but you know what it's about at the end. As long as you stay the process and continue to work at the things you need to work at ... You know what the end result is going to be."