Spain's Rafael Nadal celebrates beating Dominican Republic's Victor Estrella Burgos in their men's singles first round match on day one of the Australian Open tennis tournament in Melbourne on January 15, 2018. One match like this probably helps.
"It was a good test but at the same time I prefer to win in two hours than in four", Nadal said.
"You know, I feel like I have lost one match this year, so I'm doing all right", he said, reflecting on his Australian Open run and his title at the Brisbane International, where he beat Dimitrov in the semifinals.
The Australian managed to get his impressive serve going, managing 36 aces during the match with his second serves consistently reaching an eye watering 203 kilometres per hour.
In an often breathtaking clash boasting some sumptuous shot-making, the Spaniard was stunned by the hard-hitting Schwartzman who broke him three times before claiming the second set at Rod Laver Arena.
The key game of the fourth set lasted nearly 13 minutes and 20 points, with Nadal finally holding after saving five break points as Schwartzman attacked him with everything he had.
A poor game from Dimitrov saw him throw in three errors and allowed Kyrgios to take the lead for the first time in the match, before easily consolidating the break for a commanding 4-2 lead in the third set.
Victory ensured that Nadal will retain his world number one ranking as he set up a meeting with sixth seed and former U.S. Open champion Marin Cilic for a place in the semi-finals.
"It was a big battle".
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He will face Kyren Wilson , who beat two-times champion Mark Williams 6-1 on Thursday evening. I knew I had to knock the balls in and I could not rely on Mark to make mistakes.
"It's lovely to hear them (milestones)".
"I had the 300th win of my career at the U.S. Open in 2014, so this is also attractive one".
"But I'm glad to go through the match (and win it)".
Dimitrov downed the 17th seeded Kyrgios 7-6 (3), 7-6 (4), 4-6, 7-6 (4) in 3hr 26min and will face Britain's Kyle Edmund in the quarter-finals on Tuesday. Seppi, 33, has now played 52 majors without reaching the quarterfinals - he has lost in the fourth round five times. The 2016 champion finally got a succession of breaks to take the second set and dominate the third in a 4-6, 7-5, 6-1 victory on Monday afternoon.
While in the women's bracket, world number two Caroline Wozniacki cruised her way into the quarterfinals with a straight sets win over Magdalena Rybarikova, world number four Elina Svitolina thrashed Denisa Allertova, Belgium's Elise Mertens got the better of Petra Martic and Carla Suarez Navarro edged out Anett Kontaveit in a three-set thriller.
It also put the Mallorcan equal second with Stefan Edberg on the number of quarter-final appearances in the Australian grand slam in the professional era. "It's been good", Wozniacki said after the win. "This is really a bonus".
Six-time champion Novak Djokovic, 2017 victor Roger Federer and 2016 champion Angelique Kerber will look to book quarterfinal spots on Day 8 of the Australian Open at Melbourne Park.
Kyrgios did little wrong and said the match had been decided by the odd point here and there.
"I think you can tell my confidence is high", Wozniacki, who finished last season by winning the WTA Finals title, said in an on-court TV interview.