Andy Murray prepares a shot on Sunday in Indian Wells, California. Photo: VCG

Andy Murray rallied to win an inter-generational battle against teenager Carlos Alcaraz on Sunday, reaching the third round at the Indian Wells Masters along with Stefanos Tsitsipas and Alexander Zverev.

Murray, who has touted ­Alcaraz as a future world No.1, defeated the talented 18-year-old 5-7, 6-3, 6-2 to set up a meeting with third-seeded German Zverev, a 6-4, 3-6, 6-1 winner over American Jenson Brooksby.

Greece's Tsitsipas, the second seed, advanced in the combined WTA and ATP hard-court event with a 6-2, 6-4 victory over Spain's Pedro Martinez.

Murray, still battling to return from injuries that have seen his ranking fall to 121 in the world, raced to an early 3-0 lead before Alcaraz - who reached the quarterfinals of the US Open last month - found his range and regained a break.

After saving a set point, the Spaniard broke Murray for a second time to take the opening set.

In the second set, the former world No.1 deployed a rare ­underarm serve on game point for a 2-1 lead, and this time held on.

Britain's Murray, 34, who accepted a wild card into the draw, had just eight unforced errors in the second set to Alcaraz's 14.

He broke 30th-seeded Alcaraz to open the third set then saved four break points in the next game to maintain the advantage.

A second service break gave Murray a comfortable cushion, and it was the teen requiring late treatment on an injured foot before the oft-injured Murray sealed the victory after three hours and four minutes.

"He's obviously got so much potential, so much firepower and these conditions it's not easy to finish points off quickly, but he's able to because he has so much pace from the back of the court," Murray said.

"I felt like in the second set he played maybe better. First set I felt like I had more of the opportunities but didn't get it so yeah, happy with the way I fought."

Murray can expect a stern test in the third round from Zverev, winner of titles in Madrid and ­Cincinnati this season.

Zverev fired 28 winners against Brooksby but his 35 unforced errors were 14 more than his energetic opponent delivered.

"Especially in the second set I didn't see the ball well on [one] side of the court because of the sun," Zverev said. 

"It wasn't an easy match, but I'm happy to be through, I'm happy to be in the third round and playing Andy now."

Zverev noted that Murray was the only one of the "big four" of men's tennis - Roger Federer, Rafael Nadal, Novak Djokovic and Murray - that he has yet to beat.

"I hope I can change that," Zverev said. 

"I think it's incredible how well he's moving and incredible how well he's playing. I think he's very motivated so I hope I can show my best tennis."

In other early matches, fifth-seeded Wimbledon finalist Matteo Berrettini of Italy defeated Chile's Alejandro Tabilo 6-4, 7-5.

Italy's Jannik Sinner, seeded 10th, downed Australian John Millman 6-2, 6-2.

Spain's Albert Ramos Vinolas sprung an upset, ousting seventh-seeded Canadian Felix Auger-Aliassime 6-4, 6-2.

In women's action, second-­seeded Iga Swiatek roared to a 6-1, 6-0 third-round victory over Veronika Kudermetova.

The win came on the anniversary of Swiatek's victory in the pandemic-delayed 2020 French Open and put her into the round of 16 in her Indian Wells debut.

Aliaksandra Sasnovich of Belarus continued her upset run with a 7-5, 6-4 victory over 2015 Indian Wells champion Simona Halep of Romania.

Sasnovich, ranked 100th in the world, posted her second-­straight win over a Grand Slam champion. 

She stunned ­recently crowned US Open champion Emma Raducanu in the second round.