A day after firing Brian Callahan, the Tennessee Titans have parted ways with Callahan's father and veteran offensive line coach Bill Callahan, according to interim coach Mike McCoy.

Bill Callahan, 69, broke into coaching in 1980 and has been in the NFL since 1995 with the exception of a four-year run where he served as Nebraska's head coach. In 2002, he succeeded Jon Gruden as Raiders coach and helped lead the franchise to its most recent Super Bowl appearance (ironically, the Raiders lost to Gruden's Buccaneers in Super Bowl XXXVII).

Callahan enjoyed a successful run as the Browns ' offensive line coach prior to serving the same role on his son's staff in Nashville. But during his two seasons with the Titans, Callahan's unit struggled to protect the quarterback. Ten

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