https://es.wikipedia.org/wiki/Hyeon_Chung
Hyeon Chung - Wikipedia, la enciclopedia libre
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https://www.arabnews.com/tags/hyeon-chung
Hyeon Chung | Arab News
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https://www.thenationalnews.com/sport/tennis/roger-federer-through-to-australian-open-final-as-hyeon-chung-retires-injured-1.698912
Roger Federer through to Australian Open final as Hyeon Chung retires injured | The National
Jul 6, 2021 - The world No 2 will now go for his 20th major title on Sunday in the final against Marin Cilic