Hyeon Chung storms into semi-finals after brushing Tennys Sandgren aside
Hyeon Chung v Tennys Sandgren 6-4 7-6(5) 6-3

Hyeon Chung storms into semi-finals after brushing Tennys Sandgren aside

Unseeded Korean Hyeon Chung charged into the Australian Open semi-finals after dismissing Tennys Sandgren with a straight-sets 6-4 7-6(5) 6-3 victory on Wednesday.

The conqueror of Novak Djokovic and Alexander Zverev proved too strong for Sandgren, who had himself knocked out Stan Wawrinka and Dominic Thiem en route to the last eight, winning the encounter after two hours and 28 minutes on the Rod Laver Arena.

Up next for the 21-year-old in his first Grand Slam semi-final will be either favourite Roger Federer or 19th seed Tomas Berdych, who are in action on Eurosport 1 from 8.30am GMT.

An evacuation warning brought a minor delay to the quarter-final encounter, with the duo getting under way five minutes later than scheduled once it had proved to be a false alarm, and the supporters had returned to their seats.

And alarm bells were soon ringing for Sandgren in the opening set, with the American dropping serve in the third game as Chung converted his second break-point opportunity.

Sandgren threatened to break back immediately, but Chung dug deep to save two break points before squandering three of his own in the following game.

Chung remained comfortable on serve and closed out the first set in 37 minutes before breaking Sandgren straight away in the second.

However, momentum swung Sandgren’s way when the world number 97 breaking twice, although he failed to serve out for the set at 5-3 as Chung hit back.

Last year’s NextGen champion went on to win the tie-break 7-5, while be took control in the third set when stealing serve in the fourth game.

"In the last game at 40-0 up I was thinking about what to do in the ceremony!" Chung admitted. "After the deuce and break point, I was like, 'No, keep focused'."

Related news

Novak Djokovic into Australian Open semis after Kei Nishikori retires with injury

Novak Djokovic into Australian Open semis after Kei Nishikori retires with injury

Novak Djokovic made it into the semi-finals of the Australian Open after Kei Nishikori was forced to withdraw injured at 6-1 4-1 down.

Lucas Pouille ends Milos Raonic's run to reach first Grand Slam semi in Melbourne

Lucas Pouille ends Milos Raonic's run to reach first Grand Slam semi in Melbourne

Lucas Pouille reached his maiden Grand Slam semi-final after beating 16th seed Milos Raonic in four sets at the Australian Open.

Serena Williams squanders four match points as Karolina Pliskova battles into semis

Serena Williams squanders four match points as Karolina Pliskova battles into semis

Serena Williams squandered four match points as Karolina Pliskova remarkably battled back from 5-1 down in the final set to reach the Australian Open semi-finals.

Naomi Osaka blows away Elina Svitolina to reach Melbourne semis

Naomi Osaka blows away Elina Svitolina to reach Melbourne semis

Naomi Osaka produced a supreme performance in her hunt for back-to-back Grand Slam titles as she reached the Australian Open semi-finals for the first time with a straight-sets victory over sixth seed Elina Svitolina.

Ruthless Rafael Nadal ends Frances Tiafoe's Australian Open fairytale

Ruthless Rafael Nadal ends Frances Tiafoe's Australian Open fairytale

Rafael Nadal overcame American youngster Frances Tiafoe in straight sets 6-3 6-4 6-2 to book his place in the last four of the Australian Open.

Petra Kvitova overcomes home favourite Ashleigh Barty in straight sets to reach semis

Petra Kvitova overcomes home favourite Ashleigh Barty in straight sets to reach semis

Petra Kvitova produced a convincing performance to reach the Australian Open semi-finals after a 6-1 6-4 victory over Ashleigh Barty.

Stefanos Tsitsipas reaches Australian Open semis with win over Roberto Bautista Agut

Stefanos Tsitsipas reaches Australian Open semis with win over Roberto Bautista Agut

Stefanos Tsitsipas continued his history-making charge at the Australian Open after a four-set victory over Roberto Bautista Agut saw the 20-year-old reach the semi-finals.

Danielle Collins fights back to reach first-ever Grand Slam semi-final

Danielle Collins fights back to reach first-ever Grand Slam semi-final

Danielle Collins fought back from a set down to beat Anastasia Pavlyuchenkova 2-6 7-5 6-1 to reach her first-ever Grand Slam semi-final.

Novak Djokovic sees off Daniil Medvedev to continue Australian Open charge

Novak Djokovic sees off Daniil Medvedev to continue Australian Open charge

Novak Djokovic reached his 10th Australian Open quarter-final after coming throuhg in four sets against Daniil Medvedev 6-4 6-7 6-2 6-2 in a war of attrition on Monday.

RELATED NEWS

Novak Djokovic into Australian Open semis after Kei Nishikori retires with injury
Novak Djokovic vs Kei Nishikori 6-1 4-1 ret.

Novak Djokovic into Australian Open semis after Kei Nishikori retires with injury

Novak Djokovic made it into the semi-finals of the Australian Open after Kei Nishikori was forced to withdraw injured at 6-1 4-1 down.

Lucas Pouille ends Milos Raonic's run to reach first Grand Slam semi in Melbourne
Lucas Pouille vs Milos Raonic 7-6 6-3 6-7(2) 6-4

Lucas Pouille ends Milos Raonic's run to reach first Grand Slam semi in Melbourne

Lucas Pouille reached his maiden Grand Slam semi-final after beating 16th seed Milos Raonic in four sets at the Australian Open.

Serena Williams squanders four match points as Karolina Pliskova battles into semis
Karolina Pliskova vs Serena Williams 6-4 4-6 7-5

Serena Williams squanders four match points as Karolina Pliskova battles into semis

Serena Williams squandered four match points as Karolina Pliskova remarkably battled back from 5-1 down in the final set to reach the Australian Open semi-finals.

Naomi Osaka blows away Elina Svitolina to reach Melbourne semis
Naomi Osaka vs Elina Svitolina 6-4 6-1

Naomi Osaka blows away Elina Svitolina to reach Melbourne semis

Naomi Osaka produced a supreme performance in her hunt for back-to-back Grand Slam titles as she reached the Australian Open semi-finals for the first time with a straight-sets victory over sixth seed Elina Svitolina.

Ruthless Rafael Nadal ends Frances Tiafoe's Australian Open fairytale
Rafael Nadal vs Frances Tiafoe 6-3, 6-4, 6-2

Ruthless Rafael Nadal ends Frances Tiafoe's Australian Open fairytale

Rafael Nadal overcame American youngster Frances Tiafoe in straight sets 6-3 6-4 6-2 to book his place in the last four of the Australian Open.

Petra Kvitova overcomes home favourite Ashleigh Barty in straight sets to reach semis
Petra Kvitova vs Ashleigh Barty 6-1 6-4

Petra Kvitova overcomes home favourite Ashleigh Barty in straight sets to reach semis

Petra Kvitova produced a convincing performance to reach the Australian Open semi-finals after a 6-1 6-4 victory over Ashleigh Barty.

Stefanos Tsitsipas reaches Australian Open semis with win over Roberto Bautista Agut
Stefanos Tsitsipas vs Roberto Bautista Agut 7-5 4-6 6-4 7-6 (7-2)

Stefanos Tsitsipas reaches Australian Open semis with win over Roberto Bautista Agut

Stefanos Tsitsipas continued his history-making charge at the Australian Open after a four-set victory over Roberto Bautista Agut saw the 20-year-old reach the semi-finals.

Danielle Collins fights back to reach first-ever Grand Slam semi-final
Danielle Collins vs Anastasia Pavlyuchenkova 2-6 7-5 6-1

Danielle Collins fights back to reach first-ever Grand Slam semi-final

Danielle Collins fought back from a set down to beat Anastasia Pavlyuchenkova 2-6 7-5 6-1 to reach her first-ever Grand Slam semi-final.

Novak Djokovic sees off Daniil Medvedev to continue Australian Open charge
Novak Djokovic vs Daniil Medvedev 6-4 6-7 6-2 6-2

Novak Djokovic sees off Daniil Medvedev to continue Australian Open charge

Novak Djokovic reached his 10th Australian Open quarter-final after coming throuhg in four sets against Daniil Medvedev 6-4 6-7 6-2 6-2 in a war of attrition on Monday.