Alexander Zverev is playing the best tennis of his career.
He stretched his winning streak to 12 matches on Tuesday with a clinical, 100-minute demolition of Sam Querrey, the hard-serving American who is always dangerous on hardcourts. Zverev is one month removed from knocking off the world No. 1, Novak Djokovic, in the Olympic semifinal and winning the gold medal in men’s singles, which he followed by winning the Western & Southern Open near Cincinnati, a top-level event on the men’s tour and the main tuneup for the U.S. Open.
But as he prepares to face Albert Ramos-Viñolas of Spain in the second round of the U.