"The main thing that has really happened is I understand the details of the game that I didn't get before," Mashack said.
"Before I would line up with the receiver and just try to break up the pass or blanket the receiver.
"Now I'm trying to disguise my coverage so the quarterback thinks the receiver is open and then I break on the play."
Mashack's new knowledge of proper defensive technique is already reaping benefits.
"I had like six or seven tackles in my first game and I was close to making a few big plays," he said. "Now the next step is to finish the plays off. I'm just really happy with the improvement of my game."
Mashasck is not the only one happy with the play, as the Arizona coaching staff has been positive as well.
"I've gotten a lot of good feedback from them, and they like what they see," Mashack said. "They've always liked that I'm a flexible guy who can play physical, but they're also seeing me take the next step."
Mashack is solid to Arizona and would like to take an official.
"I'm not sure the exact date, but I'm going to get down there for a game," he said. "I have got to get that figured out.
"I love how they're playing and I want see the game and team for myself."
Although certain programs have sent out feelers to gauge Mashack's interest in checking out other schools, the pitch has fallen on deaf ears.
"It means a lot that Arizona recruited me early on and I want to get there and become the best possible player I can to reward their faith in me," Mashack said.