Sports' famous sibling rivalries

Published On: Jan 29 2013 09:35:08 AM PST   Updated On: Nov 21 2013 11:58:49 AM PST

This Sunday head coaches John and Jim Harbaugh go head-to-head when the Ravens and 49ers clash in the Super Bowl. Take a look at other siblings who have met on the field, court and ice.

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Venus and Serena Williams: The Williams sisters have gone head-to-head throughout their successful tennis careers. At times they have also teamed up to play doubles together. Serena has won 15 Grand Slam titles while Venus has won seven.


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