With Andy Murray missing due to injury and Johanna Konta making an early exit, British hopes were residing in the world number 49, who had shown flashes of talent in Slams but had only ever reached one fourth round: the US Open in 2016.
In winning, he became only the sixth British man to reach the quarter-finals of the Australian Open in the post-1968 Open Era. I mean, that's why I'm in the quarter-finals, because every time I step on the court and I'm playing, I believe I'm going to win. It's certainly my best result at a slam.
Top seed Rafael Nadal also progressed with a four-set win against Argentinian Diego Schwartzmann. Also, hard work paying off. "I'm the same player, I'm the same person", he said. "I'm playing well, feeling good and I want to keep pushing on as well as I can". Edmund broke back and when he broke again to close out the second set, he took charge of the match. That's the way I have approached it, one match at a time, and I continue to do that.
Even without factoring in fitness assessments, the numbers stack up for backing Seppi at prices in any case - there really isn't too much to split the pair from a hold/break perspective - so I'm more than happy to recommend the Italian as a heavy underdog here.
"I'm admiring myself right there", she said as she watched it back during her on-court interview. There is a lot of things I did do well. Seppi is something of a Melbourne specialist, having beaten Roger Federer here three years ago and won 18 matches overall.
It is a message that Dimitrov has increasingly taken to heart in the past year, and judging from those 12 months, he may manage to "go to all the way" this time-though he has that same formidable challenge in the semis: Nadal. He was hitting the ball very clean.More news: Jacinda Ardern baby gives New Zealand's opposition sleepless nights
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Carrying the momentum over to the third set, it was Edmund who jumped out on top as Seppi's suddenly failing serve was breached again, a thumping victor struck by the Brit off a second serve for a 2-0 lead. Edmund has won three of his last four quarterfinal appearances on the ATP level. If there is a chance to stretch a match to five sets, Seppi will jump at it.
He has been down many times in the first seven days of the tournament but he was never out. The world number one was below his best but came away a 6-3 6-7 (4-7) 6-3 6-3 victor on Rod Laver Arena after three hours and 51 minutes.
"To play to win, not to play to avoid losing, to have the heart", said Rosengren. I played some great matches.
"The most important thing for me is after not playing anything before here I am able to be in the quarter-finals".
Cilic, who defeated Pablo Carreno Busta 6-7 (2/7) 6-3 7-6 (7/0) 7-6 (7/3), reached his second grand slam final at Wimbledon last season and has set himself lofty goals for 2018.
Konatveit, who has lost in the first round at Melbourne Park the past two years, served for the match at 5-4, but had her service broken by the Spanish player.