"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.

Magnitude wins $12million Dubai World Cup
Kohli and Duffy star as defending champions RCB overpower Hyderabad
Ashwin becomes first India international to join US Major League
Mercedes driver Antonelli storms to second consecutive pole in Japan
Tiger Woods out on bail after arrest on suspicion of DUI
