A remarkable summer for Caroline Wozniacki continued with yet more drama on Friday night when she was ushered through to the US Open final when her opponent was struck by full body cramps. The 24 year-old Dane was leading Shuai Peng 7-6, 4-3 when the Chinese player started flexing her leg before becoming unable to walk with severe pain in her legs. There then followed first an off court medical evaluation, and then a full injury time out, as she was treated for what amounts to a loss of physical condition. VIDEO Scroll down for  great footage of Caroline Wozniacki including her ice bucket challenge and a day at the beach with Serena Williams
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Peng Shuai collapsed during the second set of US Open semi-final
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Chinese player was initially helped off court and received a lengthy medical time-out
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Wozniacki was leading 7-6, 4-3 when Peng began to struggle, apparently with severe cramp
A complete re-examination of the regulations can wait for another day as it was, ultimately, unfair on @placeholder, but the main focus was on the health of Peng, who had to be pushed off in a wheelchair with a doctor in attendance, leaving Wozniacki to understandably muted celebrations of a huge achievement in reaching her second US Open final, where she will face world No 1 Serena Williams.