LONDON, United Kingdom (AFP) — Novak Djokovic fended off a brief challenge from Ernests Gulbis to reach the Wimbledon last 16 yesterday as women’s top seed Angelique Kerber scraped into the business end of the championships.

Djokovic was a break down in the first set and was taken to a tiebreak in the third, but beat Gulbis 6-4, 6-1, 7-6 (7/2) on Centre Court, before Roger Federer took on Mischa Zverev.

He next faces Adrian Mannarino, who overturned French compatriot and 15th seed Gael Monfils in a five-setter.

Elsewhere in yesterday’s third-round ties, Kerber looked mightily relieved after saving her world number one status in a tense 4-6, 7-6 (7/2), 6-4 win over US world number 70 Shelby Rogers.

The German star was a break down in the second set, but did just enough to claw her way into Monday’s fourth round where she will face Garbine Muguruza.

Agnieszka Radwanska also had to come from behind in her third-round tie, while in the men’s draw, last year’s beaten finalist Milos Raonic and Grigor Dimitrov made it through — as did Sam Querrey, who took one game to beat Jo-Wilfried Tsonga.

Their match was suspended Friday at 6-2, 3-6, 7-6 (7/5), 1-6, 6-5 due to bad light, with the French 12th seed not wanting to field Querrey’s returns of serve in the gloom.

They came back yesterday, but it was all over in minutes as the US 24th seed broke serve.

Querrey faces South Africa’s Kevin Anderson for a quarter-final spot.

Canadian sixth seed Raonic downed Spain’s 25th seed Albert Ramos-Vinolas 7-6 (7/3), 6-4, 7-5 to book a fouth- round spot against Alexander Zverev.

The German 10th seed beat Austrian qualifier Sebastian Ofner 6-4, 6-4, 6-2.

Bulgarian 13th seed Dimitrov had an easy ride when Israeli Sela was forced to pull out at 6-1, 6-1 down after struggling with a right thigh injury that required treatment during the match.

The 2008 Wimbledon junior champion will next meet either Federer or Mischa Zverev.

Tomas Berdych, the 2010 beaten finalist, beat David Ferrer in straight sets. The Czech 11th seed will play either Austrian eighth seed Dominic Thiem or Jared Donaldson of the United States on Monday.

Spain’s world number 15 Muguruza, the 2015 runner-up, comfortably beat Sorana Cirstea 6-2, 6-2. The off-sorts Romanian had witnessed the horrific knee injury suffered Thursday by her last opponent, Bethanie Mattek-Sands.

The American wept as she relived the sickening injury which has left her facing surgery to repair a dislocated knee.

Wozniacki dug herself out of trouble when pushed to the brink by Anett Kontaveit, but the Danish fifth seed eventually beat the world number 38 from Estonia 3-6, 7-6 (7/3), 6-2.

She next plays 24th seed Coco Vandeweghe, considered by some as a dark horse for the title, who beat US compatriot Alison Riske 6-2, 6-4.

The deft Radwanska, the 2012 beaten finalist, came back from a set down to beat Swiss 19th seed Timea Bacsinszky 3-6, 6-4, 6-1 on Centre Court.

Radwanska next faces Russian eighth seed Svetlana Kuznetsova, the 2004 US and 2009 French Open champion, who cruised through with a 6-4, 6-0 win over Slovenian qualifier Polona Hercog.

Croatia’s Petra Martic, ranked 135, is the last qualifier still going at Wimbledon after beating Kazakh wild card Zarina Diyas 7-6 (8/6), 6-1.

Martic next faces Slovakia’s Magdalena Rybarikova, who eased into the last 16 of a major for the first time with a 6-2, 6-1 win over Lesia Tsurenko of Ukraine.

Serbia’s Novak Djokovic returns against Latvia’s Ernests Gulbis during their men’s singles third-round match on the sixth day of the 2017 Wimbledon Championships at The All England Lawn Tennis Club in Wimbledon, southwest London, on July 8, 2017.