Incoming Resources
- Outrageous car racing rivalries, by Tracy Nelson Maurer
- The secret of golf, the story of Tom Watson and Jack Nicklaus, Joe Posnanski
- Bears vs. Packers, by Anthony K. Hewson
- The greatest college football rivalries of all time, the Civil War, the Iron Bowl, and other memorable matchups, Martin Gitlin
- Brady vs Manning, the untold story of the rivalry that transformed the NFL, Gary Myers
- Outrageous pro wrestling rivalries, by Matt Chandler
- Outrageous pro football rivalries, by Matt Doeden
- WWE greatest rivalries, written by Jake Black