"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.

Desert Vipers down Gulf Giants to secure win in Super Over thriller
Real Madrid handed shock home loss as Celta Vigo spring surprise
Dubai Capitals overpower Abu Dhabi Knight Riders by 83 runs
Mid East finished strong with victory against Arabia
Norris takes F1 title as Verstappen wins Abu Dhabi race
