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SAN DIEGO, CA - SEPTEMBER 29: Brandon Nakashima of the United States hits his two-handed backhand against Andrey Rublev in the round of 16 of the ATP 250 San Diego Open at Barnes Tennis Center on September 29, 2021 in San Diego, California. Nakashima is from San Diego. (Photo by Gary Payne/Getty Images)

SAN DIEGO, CA - SEPTEMBER 29: Brandon Nakashima of the United States hits his two-handed backhand against Andrey Rublev in the round of 16 of the ATP 250 San Diego Open at Barnes Tennis Center on September 29, 2021 in San Diego, California. Nakashima is from San Diego. (Photo by Gary Payne/Getty Images)