*Serena Williams advanced to the Olympic semifinals in tennis early Thursday, while her older sister Venus squandered a lead in each set Wednesday and lost her third-round match to No. 7-seeded Angelique Kerber of Germany, 7-6 (5), 7-6 (5).

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Serena breezed by former No. 1-ranked Caroline Wozniacki of Denmark 6-0, 6-3 in pursuit of her first singles medal of her career . She’s lost only 13 games through four rounds, and will face top-ranked Victoria Azarenka of Belarus on Friday for a berth in the final.

Williams has won 11 consecutive matches this summer at London’s All England Club, including her fifth Wimbledon title a month ago.

Meanwhile, playing Olympic tennis twice a day proved too much for Venus. Seeking a record fourth gold medal in Olympic tennis, Williams still has a shot with sister Serena in doubles. They play in the quarterfinals later today.

Williams, a four-time Olympian at 32, won her only singles medal – a gold – in 2000.

“Hopefully, there’s 2016,” she said.