Rivalries are what keep sports interesting, and put us on the edge of our seats. A rivalry in sports can be between two teams, or two opponents. The reason some of the greatest games are ranked so high is because some involve high importance, or sometimes the matches can get personal. Most often though what is on the line are bragging rights. Either way, the most important thing to the two rivals is the defeat of the competitor. The rivals will do anything to come out victorious. Here are the Top 5 Sports Rivalries of all Time.