"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.

Ruthless Man City thump Newcastle to reach League Cup final
Alexandra Eala stages comeback to reach Mubadala quarter-finals
F1 legend Mika Häkkinen turns brand ambassador for Only Legends Drive UAE
Guardiola vows to speak up for victims of global conflicts
Arsenal beat Chelsea 1-0 to reach League Cup final
