"I don't know how I turned it around, I was so tired after the first set and I thought I might not be able to keep up the intensity," Medvedev said. "But I had a momentum chance in the second set and the crowd gave me energy."
World champion Novak Djokovic suffered a shock defeat at the hands of Daniil Medvedev at the Cincinnati Masters.
He lost 3-6, 6-3, 6-3 to the Russian ninth seed on Saturday.
Despite losing the first set, Medvedev managed to turn things around.
He will now face David Goffin for the title.
Dubai Basketball edge Real Madrid in EuroLeague opener
Late Gakpo equaliser earns Dutch draw against Germany
UAE launch Gulf Cup campaign with emphatic win
HotelPlanner tour: Emirati talent on show at Abu Dhabi Challenge
Joshua and Fury to face off in Cardiff in December
