Novak Djokovic and Carlos Alcaraz took their first step toward a potential quarterfinal showdown at the Australian Open, with both winning their opening matches Monday.
After dropping his opening set to Nishesh Basavareddy, an American who left Stanford University and turned pro last month, Djokovic eventually asserted himself for a 4-6, 6-3, 6-4, 6-2 victory to begin his bid for an 11th championship at Melbourne Park and a record 25th major title overall.
It was the Serbian star's first match with former rival Andy Murray as his coach. Murray retired as a player at the Paris Olympics in August; Djokovic proposed teaming up in November.
"I'm obviously thrilled to have him in my corner," Djokovic said about Murray. "I must say, it was a little bit of a strange experience to have him at courtside in my box. We played for over 20 years against each other at the highest level. Great to have him on the same side of the net. He gave me some great advice midmatch."
The 19-year-old Basavareddy, making his Grand Slam debut, made Djokovic look every one of his 37 years as he tore around Rod Laver Arena mixing clean winners with some beautifully deft drop shots.
Basavareddy had the crowd on their feet when he broke for 4-3 in the first set with a sizzling backhand return, again when he fought off two break points to hold for 5-3, and a third time when Djokovic dumped a backhand into the net to cede the set.
It was not until the eighth game that the former world No. 1 managed to convert his first break point of the contest.
"In the end it was great, but he was the better player for the first set and a half and he deserved every bit of applause he got as he left the court," said Djokovic.
"This kind of match is always tricky, playing against someone who has nothing to lose. He handled himself really well and I'm sure we'll see plenty of him in the future."
This first-round match was Djokovic's record-extending 378th victory at a major; he hasn't lost in the first round of one since bowing out at that stage of his first two Australian Opens in 2005 and 2006.
He'll next face another relative youngster in 21-year-old Portuguese player Jaime Faria in the second round.
Earlier Monday, Alcaraz began his bid to complete a career Grand Slam with an imperfect but entertaining 6-1, 7-5, 6-1 win over Alexander Shevchenko of Kazakhstan.
Four-time major champion Alcaraz is targeting his first trophy at Melbourne Park to become the youngest man to capture all four Grand Slam titles, and the 21-year-old went all guns blazing after a slightly nervy opening game.
"I always say that it's hard work," Alcaraz said.
"I try to bring the best of me every day. That's the secret. Every day I try to be a better person and better player."
The third seed, still fine-tuning a new service motion that he adopted in the offseason, fended off a break point and then broke in the third game to take full control of the opening set, which he wrapped up quickly.
He found his range with some devastating winners on both flanks and went up 3-1 in the second set, but world No. 77 Shevchenko won the next four games as fans on Margaret Court Arena got behind the underdog.
Alcaraz switched back on and struck a fiery forehand winner to set up another break point and drew level in the 10th game as his opponent began to feel the intense pressure again and went on to surrender the set.
With the momentum having swung definitively, Alcaraz reeled off games in the third set and finished it off with a big ace on his fifth match point to book a second-round meeting with Japan's Yoshihito Nishioka.
"He's a really solid player," Alcaraz said.
"I have to be focused on my shots. ... Hopefully I can enjoy the match; it's going to be tough. I'll try to produce some good tennis for people to enjoy."
Information from The Associated Press and Reuters contributed to this report.