First on clay and now on grass, China's pioneering tennis star Zhang Zhizhen has served up further proof of his all-around evolution with a shock victory over world No 5 Daniil Medvedev at the Halle Open in Germany.▲China's Zhang Zhizhen recorded his second career victory over a top-5 player when he upset third-seeded Daniil Medvedev 6-3,2-6, 7-6 (5) on grass at the Halle Open on Wednesday.An emerging star developed in China's hard-court-dominant system, Zhang demonstrated his growing adaptability — a necessity to achieving success in pro tennis — in remarkable style on Wednesday, by stunning the Russian third seed Medvedev in three sets at the ATP500 tournament. And he did it on grass, a surface very few of China's current professional players had access to in their youth careers.Undoubtedly the underdog in the face of the former world No 1 and 2021 US Open winner, the currently 42nd-ranked Zhang punched well above his weight. He came back from 3-5 down in the third-set tiebreak
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