When and where: Action from women's semifinal day at Wimbledon at 8 a.m. ET. Coverage will be on ESPN, with a live stream available on ESPN3. Viewers in the U.K. can catch the action across the BBC, with a live stream accessible on the BBC Sport website.
Preview: After an enthralling day of quarterfinals, the four women remaining at Wimbledon will have to go some way to match the level of quality and excitement.
Fresh from their dramatic three-set contests on Tuesday, Angelique Kerber and Agnieszka Radwanska will vie to be the first to breakthrough into a grand slam final. Kerber exerted herself both emotionally and physically in overcoming fellow-German Sabine Lisicki to take her place in the last four of a slam for the second time.
The 24 year old came out of nowhere to reach the semifinals at the US Open last year and hasn't looked back since. Kerber has won more matches on the WTA Tour this year than anyone else as she has soared from a ranking outside the top 100 under a year ago to cement herself firmly inside the top 10.
It is her opponent, though, that is still within a chance of ending the tournament as the world's No.1. Surprisingly for someone on the verge of that honor, this will be Radwanska's first appearance in the semifinals of a grand slam. Having lost her five previous quarterfinals, there was plenty of opportunity to tighten up as her encounter with Maria Kirilenko took most of the day to complete and took place on two different courts.
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Kerber and Radwanska have split their four previous meetings, with the last three going the distance. Given that the match features two of the most consistent ball-strikers on tour, Serena Williams and Victoria Azarenka may be waiting some time before taking to Centre Court for the day's second semifinal.
If the Belarusian second seed can reach make her second grand slam final of the year then she will ensure herself a place at the top of the rankings. But first Azarenka has quite a challenge to overcome. Williams has dominated her younger opponent in head-to-heads, coming out on top of in seven of their last eight meetings and winning the last eight sets between the pair.
Azarenka will also be fully aware of the need to up her game considerably after struggling to put away the valiant Tamira Paszek in the quarterfinals. In contrast, Williams looked close to her best as he dispensed of defending champion Petra Kvitova in an imperious straight-sets win.
The biggest worry for Williams may be whether she can stay at her physical peak. The 30 year old took the brave move of playing two rounds of doubles with sister Venus on Wednesday, the first of which went all the way to a 9-7 final set. If she can recover in time then her fine serve and potent ground strokes may again prove too much for Azarenka.