Finishing with a 207.8 passer rating and 316 total yards on the day, junior quarterback J.J. McCarthy didn’t have to travel to Las Vegas to play with house money. It’s all in the difference a year can make. 364 days after his first-career start against Hawaii — and without a quarterback controversy looming over his head — McCarthy played like he still had a job to win. Lacing passes and contributing on his feet, McCarthy displayed calm maturity en route to the No. 2 Michigan football team’s (2-0 overall) trouncing of UNLV (1-1), 35-7. “(That) was the real J.J. McCarthy,” senior wide receiver Roman Wilson said. “I think he put in a lot of work over this offseason and it’s just him being a lot more natural and relaxed in the game.” That relaxed attitude only bolstered his passing attack. McCarthy and his receivers went after the Rebels’ secondary early and often. The junior completed his first 13 consecutive passing attempts, culminating in a 22-for-25 performance. Pledging throu...