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The defending champ is Venus Williams, and so far she's made it into the round of 16 without dropping a set. She's seeded sixth in this tournament and also broke the Wimbledon record for fastest serve. She uncorked a 127 mph ace to close out her third round straight set 6-1, 7-5 victory over Spain's Maria Jose Martinez Sanchez.
Seventh seeded baby sis Serena is also in the Round of 16 and hasn't dropped a set either. She did have to work to oust France's Amelie Mauresmo in their third round match. Mauresmo forced a tiebreaker in their first set that Baby Sis took 7-5, then blew her out in the second set 6-1 to take the match.
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We'll find out over the course of this week if the Williams sisters will be the last women standing as they seek to add additional Wimbledon singles and doubles titles to the ones they've already won.