Karolina Muchova overcomes illness to reach US Open semi-final

The Czech received medical treatment and had to leave the court four times for comfort breaks, but she still did the business beating Beatriz Haddad Maia 6-1 6-4 to reach the last four for the second successive year.She is still in the early stages of a comeback from a serious injury, where she spent 10 months on the sidelines following wrist surgery, only returning in June.And she is making up for lost time in New York, looking as good as anyone left in the draw and still yet to drop a set in the tournament.A tough test lies ahead in the shape of world number one Iga Swiatek or home…