WTA Stephens to face Vesnina in Charleston final after Kerber retires Australian Open champion Kerber decided she could not continue when trailing seventh seed 6-1, 3-0 in Charleston on Saturday. Team Sportstar 10 April, 2016 15:45 IST Stephens to face Vesnina in Charleston final after Kerber retires Team Sportstar 10 April, 2016 15:45 IST Sloane Stephens reached the final of the Volvo Car Open after top seed and defending champion Angelique Kerber retired from their semi-final due to illness. Australian Open champion Kerber decided she could not continue when trailing seventh seed 6-1, 3-0 in Charleston on Saturday. Top seed Kerber will lose her status as world number two to Agnieszka Radwanska as a result of missing out on a place in the final, while Stephens is just one win away from her third title of the year. > WATCH: Highlights from Charleston semi-finals Stephens won the opening four games of the match to stun Kerber and the world number 23 wasted no time in wrapping up the opening set as the German looked out of sorts. The American produced some eye-catching groundstrokes and applied pressure on the favourite's serve, but it was apparent that Kerber was struggling as she racked up 16 unforced errors and was unable to continue. Stephens will face qualifier Elena Vesnina in Sunday's final of the WTA Premier event. Vesnina sealed her place in the decider with a surprise 6-4, 4-6, 6-2 victory over Sara Errani, becoming the first qualifier to reach the final in the tournament's 44-year history. The Russian outsider won 65 per cent of points on her first serve and broke six times to set up a showdown with Stephens at the expense of the fifth seed. Highlights: Muguruza ends long wait, beats Krejcikova in Dubai final Muguruza holds off Mertens to reach third WTA final of 2021 Coco Gauff leads upsets in Dubai, top-seeded Svitolina loses Kvitova wins Qatar Open title in emphatic style Read more stories on WTA. More Videos Venus thrashes Azarenka at Top Seed Open, to face Serena next Barty and Rafter drop in on Brisbane Hospital Madrid Open Virtual Pro: Pumped up Andy Murray wins Madrid Virtual Singles Title Naomi Osaka 'united by emotion' for Tokyo Olympics Australian Open: Self-belief and hatred for losing won me the title - Kenin Australian Open 2020: Best of Serena Williams Ashleigh Barty claims record prize for winning WTA Finals Day five highlights - Big names reach second week at Flushing Meadows