New Wisconsin offensive line coach Eric Mateos didn't waste any time upon joining the Badgers. The day he got hired, he called offensive tackle Kevin Heywood to introduce himself. By the time the two had their first one-on-one meeting, he had already watched Heywood's film from the previous spring. “He’s a dog, I love him so much," Heywood said with a smile. "He’s just as honest as it gets. He’ll pick up the phone and tell you you messed up; there’s no sugarcoating anything. I think he’s very focused on the details.” Mateos "Lit a spark" for Wisconsin Along with five incoming transfers, Mateos is a big part of the renewed optimism for Wisconsin's offensive line. The once-proud unit has been a shell of its former self in recent seasons, weathering a carousel of coaching changes, injuries and flat-out poor play. Mateos, who comes over from Arkansas but spent time on staff with offensive coordinator Jeff Grimes at Baylor and BYU, is now tasked with helping rebuild the heart and soul of Wisconsin football.…