Chung storms into semi-finals By

On how that experience compares with this year, he added: "I wake up in a morning walking normally, whereas last year I could feel my back, my leg, my foot - whatever was hurting".

Asked if he is becoming more famous in his homeland, he responded: "I think sure, yeah, getting better and better all the time now". Chung, the first Korean - male or female - to reach a Grand Slam semifinal, was forced to retire with an injury that was later revealed to be severe blisters.

Chung advanced to last four of the Australian Open after ending the run of American 97th-ranked Tennys Sandgren 6-4 7-6 (5) 6-3 in two hours and 28 minutes on Rod Laver Arena.

Chung has also taken the title for being the world's youngest semi-finalist being 21 years and 254 days old.

Another reason for celebration could be that the latest victory marked Federer's 92nd win in 105 matches he played in Melbourne making Australian Open his most successful Grand Slam in terms of matches won.

The 29-year-old stunned Federer in the 2014 US Open semi-finals on the way to claiming his first - and so far only - major title with a 6-3 6-3 6-3 victory over Kei Nishikori.

Federer beat Cilic in straight sets in the Wimbledon final a year ago, the Croatian reduced to tears as he also struggled with blisters, but the world number two is expecting a closer encounter at Melbourne Park. Because he (Chung) has played so many matches in the row, I think that's why it was a build-up.

- Slam success shared - Roger Federer and Marin Cilic will be playing each other in their second Grand Slam final.

Chung's fortnight already included a five-set upset of fourth-seeded Alexander Zverev of Germany and a straight-sets win over 14th-seeded Novak Djokovic of Serbia, a six-time Australian Open champion.

"I never played in second week of a Grand Slam, so I'm really surprised", said the delighted Suwon native, who is the first player - man or woman - from his country to reach a Grand Slam semi-final.

"We saw it against Rafa [Nadal] and we saw it again last night against [Kyle] Edmund".

Federer's conversation rate is better in finals in Australia - the only time he lost a championship match was against Rafael Nadal in 2009. "I couldn't tell what was going on with my opponent". Apart from that I haven't seen him play very much. "I think I've done everything pretty well. Things must be all right if I haven't dropped a set and in the final". In second set, the Swiss continued to show Chung the kind of level he needs in a major semifinal and broke for a 3-1 lead courtesy of a backhand victor past his Korean opponent.

  • Salvatore Jensen