Melbourne, Australia — Rafael Nadal has missed a lot of tennis since last September. He hasn't missed a beat.
The No. 2-seeded Nadal had a 6-4, 6-3, 7-5 win over Australian wild-card entry James Duckworth on Monday in the first round of the Australian Open, his first match back on Rod Laver Arena since he had to retire during his quarterfinal match last year.
The 17-time major winner hasn't played since retiring from his semifinal at the U.S. Open because of a knee injury, and then had surgery on his right ankle in November. He also withdrew from a tune-up tournament in Brisbane because of a muscle strain in his thigh, mainly as a precaution, to ensure he's fit for the season-opening major.
"Not easy to come back after a lot of months of competition, especially against a player playing super aggressive every shot," Nadal said. "It's very difficult to start after an injury — I know it very well. It's very special to be back."
Wearing a sleeveless top, he showed no signs of any issues against Duckworth. His only hiccup came when he served for the match in the ninth game of the third set and was broken at love. He returned the favor very quickly, though, to seal his spot in the second round.
Nadal has only lost twice in the first round at Grand Slams — to Steve Darcis at 2013 Wimbledon, and to Fernando Verdasco here in 2016 — and is aiming to be the first man in the Open era two win all four majors at least twice.
Maria Sharapova was the first of five Australian Open winners to play on Rod Laver Arena on Day 1, starting with a 6-0, 6-0 win over Harriet Dart. No. 2-ranked Angelique Kerber, the 2016 Australian Open champion, opened with a 6-2, 6-2 win over Polona Hercog.
Sharapova has the second-best record among active women's players in first-round matches at the majors, and she gave an illustration of why that's the case in a 63-minute disposal of Dart.
The 2008 champion is making her 15th trip to Melbourne Park and her 55th Grand Slam tournament, and she's acutely aware of the toll that the sun and long early matches can have on a player's title ambitions, so she gets straight to business.
Stung by a first-round loss at Wimbledon last year, Sharapova said she couldn't afford to feel any empathy for Dart.
"I mean, there is no time for that, I'm sorry to say ... when you're playing the first round of a Grand Slam," said Sharapova, who is still feeling pain in her right shoulder despite sitting out the end of last season after the U.S. Open. "I think I was just focused on not having a letdown.
"I think it's very easy to be in a position where things are flowing, you know, you're doing all the right things, she's making a few errors, you're comfortable, easy to get complacent, and, you know, complacency is not great. I was glad that I did the right things from the beginning till the end."
Also advancing were 2017 U.S. Open champion Sloane Stephens, No. 11 Aryna Sabalenka, No. 19 Caroline Garcia, No. 29 Donna Vekic and No. 31 Petra Martic.
Danielle Collins advanced to the second round of a major for the first time following a 2-6, 7-6 (5), 6-4 win over No. 14-seeded Julia Goerges, who won the title in Auckland to start the season.
Katie Boulter earned the distinction of winning the first 10-point tiebreaker under the Australian Open's new system for deciding sets, and she celebrated twice.
Boulter beat Ekaterina Makarova 6-0, 4-6, 7-6 (6), including 10-6 in the tiebreaker. Boulter started celebrating and went to the net when she reached 7-4 in the tiebreaker, forgetting it wasn't a conventional count.
The new rule was introduced to ensure matches don't get too lengthy — previously the third set in women's matches and the fifth set in men's matches at the Australian Open had to be decided by a two-game advantage.
Fifth-seeded Kevin Anderson won his first match at Melbourne Park since 2015 when he beat Adrian Mannarino 6-3, 5-7, 6-2, 6-1. Also advancing on the men's side were No. 19 Nikoloz Basilashvili, No. 20 Grigor Dimitrov and No. 26 Fernando Verdasco.
Defending champions Caroline Wozniacki and Roger Federer were scheduled to play night matches later Monday.