Listen every morning at 7:40am for your chance to figure out the Secret Sound!
Jim and John Harbaugh aren't the only sibling rivals in sports!
photo credit to twitter @ravens
- Vince (Pittsburgh Pirates), Dom (Boston Red Sox), and Joe Dimaggio (New York Yankees)
- Serena and Venus Williams (tennis pro's)
- Vitali and Wladimir Klitschko (heavyweaight boxing pro's)
- Eli (NY Giants) and Peyton (Indianapolis Colts) Manning
- Pau and Marc Gasol (NBA players... Marc was actually once traded for Pau!)
Check out the full list from Time Magazine here.