Qualifier Uchiyama Upsets Top-Seeded Rune at Hangzhou Open
Former Rolex Paris Masters champion Rune struggled on second serve. Rune won just eight of 25 second-serve points and faced 14 break points in the match. “I’m very excited, I’m happy with my performance today,” Uchiyama said. “I couldn’t imagine winning in two sets, I was just thinking about my performance, I had to play…