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The Pac-12 will occupy a big chunk of college football's 2015 opening weekend programming, with the 12 teams involved in nonconference games spread over three days.  This briefing will cover the three Thursday games, with another round to come, addressing the nine games between Friday and Saturday.  Thursday's games Michigan at Utah, 6:30 p.m. MDT, Fox Sports 1 Having any school from another Power 5 conference come to Rice-Eccles Stadium for a season opener would be a big deal. Mix in Michigan's tradition and Jim Harbaugh's debut as the Wolverines' coach, and you get a major event.  The only Ute opener in recent history to attract any resembling this kind of attention was Texas A&M's visit in 2004, when Utah was coming off a 10-2 season and coach Urban Meyer was promising, "You Ain't Seen Nothin' Yet" in an advertising campaign. Well, he delivered a 12-0 season.  The Aggies of '04 were similar to Michigan, with a brand name but not an especially good team. The Wolverines may not be cupcakes, exactly, but Utah's timing is good. The Utes won 26-10 at Michigan last September and the Wolverines again should have trouble scoring against Utah's solid defense.  If Utah's passing game is productive at all, Devontae Booker should have some running room after Michigan held him to 34 yards on 11 carries last year. Utah 24, Michigan 14.   Texas-San Antonio at Arizona, 8 p.m. MDT, Pac-12 Networks As usual, Arizona is easing into the season. The Wildcats play UTSA, Nevada and Northern Arizona before defending their Pac-12 South title.  The Roadrunners did give Arizona a test last year in San Antonio, where the Wildcats held on for a 26-23 win. That was before quarterback Anu Solomon settled into the job and Arizona's defense improved, so the rematch should be easier for the Wildcats. Arizona 42, UTSA 17.   Colorado at Hawaii, 11 p.m. MDT, CBS Sports Network This game should be worth the late-night effort, for entertainment. Hawaii improved markedly last season in coach Norm Chow's third year, although the Warriors often came close enough to end up disappointed.  Last year's meeting in Boulder was surprisingly low-scoring, with Colorado taking a 21-12 victory. Even so, the teams should produce some points, with USC transfer Max Wittek taking over Hawaii's offense and Sefo Liufau now a third-year starting quarterback for Colorado. Jim Leavitt is Colorado's new defensive coordinator, and Hawaii's offense will test his group. But as shown last year, Colorado should have better athletes across the board. Colorado 31, Hawaii 24.  – Kurt Kragthorpe