Daniil Medvedev defeated fellow Russian Andrey Rublev 6-4, 6-3, 6-4 in scorching conditions Wednesday to reach his fourth US Open semi-final and set up a possible meeting with defending champion Carlos Alcaraz. Third seed and 2021 champion Medvedev rallied from a break down in all three sets as he condemned a frustrated Rublev to a ninth straight Grand Slam quarter-final loss. Medvedev will play Alcaraz or German 12th seed Alexander Zverev for a place in Sunday's final after an energy-sapping duel against the eighth-ranked Rublev as the temperature hit 95 degrees Fahrenheit (35 degrees Celsius) in New York.