There is nothing like a duel of two players at their best to stir up interest. Whether it is two basketball players going at each other every play down the court or a pair of golfers matching each other shot for shot, few things electrify a crowd like a good individual rivalry.
As we saw on Sunday, it doesn't necessarily have to be two players dueling for sports fans to take notice. Over the last few days, the post-game fracas between Jim Harbaugh and Jim Schwartz has been the most talked about story in football, more than any game played on Sunday.
Read on for the five best in sports history.