“In the NFL, though, Carroll has had the upper hand over Harbaugh (6-5), especially in their most recent battles,” Moton wrote. “Though the Chargers are coming off a year in which they clinched a playoff berth with an 11-6 record, Harbaugh probably isn't thrilled to see Carroll back in his conference and division.”

Pete Carroll will turn 74 in September when he embarks on his first season as head coach of the Raiders.

Former Seahawks coach Pete Carroll and the Raiders agreed to a three-year contract with a team option for a fourth year, according to a report.