Over the past decade or so, Arizona Stadium and McKale Center lost hundreds of coveted parking spots with the construction of Sitton Field and the school’s rec center near Arizona Stadium. But by the 2017-18 school year, an $18.5 million parking garage will be built nearby, on Sixth Street and Warren Avenue, which is scheduled to have about 1,000 parking places. The parking near every Pac-12 football and basketball facility is chaotic and not nearly enough. The worst: Cal. No contest. The best: Utah, which has a light-rail system that delivers fans to Huntsman Center and Rice-Eccles Stadium.