6’4″ four-star OLB Bo Calvert decommits from USC, immediately flips to a major rival

Four-star outside linebacker Bo Calvert had been committed to USC since April, but it looks like he has officially made the flip. The California native took to Twitter to make his announcement. Westwood #Committed pic.twitter.com/8N3Tfu2ZYX — Bo Calvert (@bo_calvert) December 19, 2017 The 6-foot-4, 218-pound linebacker gives Chip Kelly and UCLA their 13th commitment in the…