Looks like the Williams sisters are headed for another final showdown at England’s most famous tennis venue. Professional tennis’ most powerful sibling duo in history are steaming full speed ahead for a collision at Wimbledon on Tuesday. Both have hammered their opposition to advance to the tournament’s semifinal round. Five-time Wimbledon winner and current champ Venus was the first of the Williams sisters to secure a place among the final four, whipping up on Agnieszka Radwanska 6-1, 6-2, in little more than an hour. Serena disposed of her opponent, Victoria Azarenka, in similar ruthless fashion – 6-2, 6-3 – in about an hour and 13 minutes. The next test for the Williamses are top-seeded Dinara Safina and fourth-seeded Elena Dementieva. If Venus beats Safina and Serena knocks off Dementieva today, the fourth Williams vs. Williams clash of the tennis titans would take place. “That would be fantastic,” Venus, who is 1-2 against her younger sister in Wimbledon finals. “It’s what Serena and I are hoping for, but we still have to play well.”