S. Korean Chung Hyeon beats Zverev to reach Australian Open 2nd round

South Korean tennis hopeful Chung Hyeon reached the second round of the Australian Open after defeating Zverev at a Grand Slam tournament.

South Korea's Hyeon Chung has maintained his unbeaten run at the ATP Next Gen tournament in Milan. (AAP) Source: AAP

Chung, world No. 62, beat the 35th-ranked Zverev (Retired/ 6-2/ 4-1) in the opening round of the season's first major tournament in Melbourne. The 20-year-old, the highest-ranked South Korean male tennis player, will next face.