Jim Harbaugh and Pete Carroll go way, way back. Carroll's hiring as the new head man for the Las Vegas Raiders is sure to ignite the rivaly with Harbaugh.

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.

After battling for supremacy in the Pac-10 and the NFC West, Carroll and Harbaugh are now set to square off in the AFC West.