This Saturday’s visit from Notre Dame is a prove-it game for Ryan Walters. He gets it. The Purdue coach knows the stakes when the ball kicks off at 3:30 pm ET on CBS. “Yeah, I definitely think there is an element of proving it or earning respect,” said Walters on Monday. “You know, I would be lying to you if I didn’t say this game was circled on my calendar. You know, so we’re excited.” The Boilermakers (1-0) had last week off, giving them two weeks of prep time for a big early-season clash with the Fighting Irish, which last visited Ross-Ade Stadium in 2013. “We’re glad that we had a bye week…
