Confident Alcaraz faces aggressive Humbert in Wimbledon's fourth round

Wimbledon action continues at the All England Club on Sunday as the world's top players battle for a place in the quarter-finals of the Grand Slam in London.

Defending champion Carlos Alcaraz is up against 16th seed Ugo Humbert, while top seed Jannik Sinner faces 14th seed Ben Shelton.

U.S. Open champion Coco Gauff will take on compatriot Emma Navarro, seeded 19, while French Open finalist Jasmine Paolini seeks to keep her career-best Wimbledon campaign going with a win over 12th seed Madison Keys.

Here are the latest results and highlights

TOP MEN'S MATCH: ALCARAZ V HUMBERT

Spanish third seed Alcaraz was on the brink of defeat against Frances Tiafoe but fought back to edge the fourth set in a tiebreak before claiming a convincing victory in the fifth.

The French Open champion said he made some mistakes with his serve during the match, but his fortitude during the fifth set got him the win.

Frenchman Humbert prevailed over Brandon Nakashima over four closely fought sets.

Alcaraz and Humbert are locked at 1-1 in head-to-head meetings.

TOP WOMEN'S MATCH: GAUFF V NAVARRO

Second seed Gauff has reached the Wimbledon fourth round twice, but has never gone further, with Wimbledon remaining the toughest Grand Slam to crack for the 20-year-old who has won the U.S. Open, reached the French Open final and the Australian Open semis.

Coming off three straight-set wins, Gauff is looking well poised to break through that barrier this year. 

"I think this year I'm just playing with a lot more confidence, trusting my ground game a lot and returning a whole lot better," she said on Friday. 

However, Gauff's opponent Navarro is in her best form on grass, reaching Wimbledon's fourth round for the first time. 

"I know I have the level inside of me that