Roger Federer has advanced to the final of Australian Open 2018 when Korean opponent Hyeon Chung retired injured late in the second set of Friday's semifinal, Federer leading 6-1 5-2 after 63 minutes.
Trailing 4-1 in the second set, the world No 58 sent for the trainer and took a medical time-out to have treatment on the blister.
The 21-year-old Chung, who stunned six-time victor Novak Djokovic in the fourth round, was forced to call it quits two games after being treated for a blister on his left foot.
Federer is chasing a 20th major title and a joint-record sixth at Melbourne Park, while Cilic hopes to lift his second Slam in his first final in Australia.
World No.1 Rafael Nadal, six-time champion Novak Djokovic and former victor Stan Wawrinka succumbed to injuries, while five-time finalist Andy Murray didn't even get to the starting line.
In a repeat of last year's Wimbledon final, we should be treated to a more competitive affair this time around as blisters curtailed Cilic's performance significantly at SW19.
A family holiday in the Maldives might seem a good time for Roger Federer to put the racket down, but the Swiss mastercould not resist the offer of a hit when he found out Marin Cilic was also relaxing in the islands.
Federer looked in incredible touch ahead of facing Čilić in a rematch of last year's title victory at Wimbledon. Now it's redrawn. They tried injections to see if it numbed the pain.
'Now I've got two more and I'm one match away from another'. But I played a good match. "However, I had to make a tough decision given that I can not compete 100% against Roger, in front of many tennis fans. And I hope I can read his serve".
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It was left to Chung's agent Stuart Duguid to explain his client's ailment as "blister under blister under blister". I play Sascha, Novak, Roger.
The Korean will have bigger and better days at slams in the future but this was a hard experience from the moment he dropped serve in the opening game.
Federer and Chung were battling for a spot in the final and with the Swiss maestro steamrolling through the opening set, fans were keen to see if Chung could mount a comeback.
Chung's unexpected run to be the first South Korean in a Grand Slam semi-final has drawn new fans to the sport in his homeland where tennis lags far behind golf and baseball in the popularity stakes.
"I've played with blisters in the past and it hurts a lot". "I'm just learning a lot".
Hyeon Chung at least made it to the semi-finals, which was more than Rafael Nadal, Andy Murray, Novak Djokovic and Stan Wawrinka were able to do thanks to their respective physical problems.
"I was there first and he arrived later on the island", said Federer.
"I think he is already a great player, but we are talking next level excellence and I think he will achieve that".