Now that Pete Carroll and Jim Harbaugh are in the same division again, get ready for more amazing battles between two coaches who have always made each other better.

Pete Carroll accepted the lead job with the Las Vegas Raiders, once again pitting him against long-standing rival Jim Harbaugh.

Pete Carroll and Jim Harbaugh have waged war against each other for years, in college at USC and Stanford and in the NFL with the Seattle Seahawks and San Francisco 49ers, and Carroll landing the Las Vegas Raiders job reunites them once again.