Carroll took over the Seattle Seahawks in 2010, and Harbaugh became the head coach of the San Francisco 49ers in 201

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.

The workings of life are strange. Two different people might not want to cross paths ever again, but they somehow keep bumping into each other. Two people with complicated histories manage to intersect again and again,