Zhang Zhizhen recorded his third career victory over a top-10 opponent when he upset third-seeded Daniil Medvedev 6-3, 2-6, 7-6 (5) at the grass-court Halle Open on Wednesday.
Zhang Zhizhen recorded his third career victory over a top-10 opponent when he upset third-seeded Daniil Medvedev 6-3, 2-6, 7-6 (5) at the grass-court Halle Open on Wednesday.