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Cal’s hiring of Wisconsin defensive coordinator Justin Wilcox as its new football coach represents a notable change, from offense to defense, among a league once laden with offensive-system coaches. Now seven of the Pac-12’s head coaches are defensive-oriented men: Wilcox; Utah’s Kyle Whittingham; Colorado’s Mike MacIntyre; ASU’s Todd Graham; UCLA’s Jim Mora; Oregon’s Willie Taggart; and Oregon State’s Gary Andersen all came up through the ranks as defensive coaches. It’s like the 1990s all over again.