| Rival of Lennox and Carrier | 27 |
| Rival of Lendl and Becker | 25 |
| Rival of Lee and Jack | 21 |
| Rival of Laver and Nastase | 26 |
| Rival of Las Vegas | 18 |
| Rival of Lands' End | 23 |
| Rival of Lafayette | 18 |
| Rival of LAD and ARI | 20 |
| Rival of LA | 11 |
| Rival of Klein | 14 |
| Rival of Karloff | 16 |
| Rival of JVC or Hitachi | 23 |
| Rival of JVC and Panasonic | 26 |
| Rival of JVC | 12 |
| Rival of Joy | 12 |
| Rival of Jonas Salk | 19 |
| Rival of Jockey | 15 |
| Rival of Jimmy and Bjorn | 24 |
| Rival of Jay | 12 |
| Rival of Ivan and Andre | 23 |
| Rival of Ilie and Jimmy | 23 |
| Rival of Hires and Barq's | 29 |
| Rival of Hires | 14 |
| Rival of Hingis | 15 |
| Rival of Hertz | 14 |
| Rival of Henry Ford | 19 |
| Rival of Helena and Max | 23 |
| Rival of Helena | 15 |
| Rival of Harvard | 16 |
| Rival of Harry and Ron | 22 |
| Rival of Harry | 14 |
| Rival of Harrow | 15 |
| Rival of Greece | 15 |
| Rival of Gottfried Leibniz | 26 |
| Rival of Goran and Stefan | 25 |
| Rival of Glenn and Benny | 24 |
| Rival of George and Bill in '92 | 35 |
| Rival of Freud | 14 |
| Rival of Francesco Rinaldi | 26 |
| Rival of Foyt or Mears | 22 |
| Rival of Fortune | 16 |
| Rival of Federer and Djokovic | 29 |
| Rival of Fab | 12 |
| Rival of Elizabeth | 18 |
| Rival of Edison | 15 |
| Rival of eBay | 13 |
| Rival of EarthLink | 18 |
| Rival of Dwight | 15 |
| Rival of Domino's | 21 |
| Rival of Denny's | 20 |
| Rival of Delta and American: Abbr. | 34 |
| Rival of Dell | 13 |
| Rival of Dashiell | 17 |
| Rival of Dad's and Barq's | 33 |
| Rival of Connors and McEnroe | 28 |
| Rival of Connors | 16 |
| Rival of Coco and Christian | 27 |
| Rival of Clinton and Edwards | 28 |
| Rival of Clinton | 16 |
| Rival of Clark and Gary | 23 |
| Rival of Chris and Martina | 26 |
| Rival of Chopin | 15 |
| Rival of Caterpillar | 20 |
| Rival of Cassius | 16 |
| Rival of Cassio | 15 |
| Rival of Carthage | 17 |
| Rival of Carl Jung | 18 |
| Rival of Caravaggio | 19 |
| Rival of Captain Morgan | 23 |
| Rival of Captain Absolute | 25 |
| Rival of Canisius in college sports | 35 |
| Rival of California Pizza Kitchen | 33 |
| Rival of Brown | 14 |
| Rival of Brom in an 1820 novel | 30 |
| Rival of Brokaw | 15 |
| Rival of Breyers | 16 |
| Rival of Boris and Stefan | 25 |
| Rival of Borders | 16 |
| Rival of Bon Ami | 16 |
| Rival of Bobbi | 14 |
| Rival of BMW | 12 |
| Rival of Blender | 16 |
| Rival of Bjorn in 1976 | 22 |
| Rival of Bjorn and Jimmy | 24 |
| Rival of Bjorn | 14 |
| Rival of Billie Jean and Martina | 32 |
| Rival of Billie Jean | 20 |
| Rival of Betty in Archie Comics | 31 |
| Rival of Bali and Lily of France | 32 |
| Rival of Babylonia | 18 |
| Rival of B.M.I. | 15 |
| Rival of Aunt Millie | 20 |
| Rival of Athens | 15 |
| Rival of Aspen | 14 |
| Rival of ASCAP | 14 |
| Rival of Apollo for Marpessa's love | 39 |
| Rival of AP | 11 |
| Rival of Andre | 14 |
| Rival of ancient Sparta | 23 |
| Rival of ancient Persia | 23 |