You surely know the name Hyeon Chung by now. The world No. 22 showed why he's one of the fast-rising young stars on the tour with an earth-shattering forehand to seal his first clay win of 2018 in Munich.

The 21-year-old South Korean beat Matthias Bachinger, a qualifier 10 years his senior, 6-1, 6-1, to set up a quarterfinal with Martin Klizan.

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Chung has had a breakthrough season so far, reaching the semifinals of the Australian Open before making runs to the quarterfinals of both Indian Wells and Miami.

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After starting the year at No. 58, Chung cracked the Top 20 for the first time last month. Munich is his first clay-court event of the year after withdrawing from Barcelona last week.