(Adds latest match)
LONDON, July 6 (Reuters) - Highlights of the sixth day at Wimbledon, the third Grand Slam tournament of the year, on Saturday (times GMT):
Andy Murray and Serena Williams won their opening-round mixed doubles match against Andreas Mies and Alexa Guarachi 6-4 6-1.
They will face the 14th-seeded pairing of Fabrice Martin and Raquel Atawo in the second round.
Konta leaves Stephens reeling again
‘Goofy’ Gauff can’t believe who is watching her heroics
Heavier balls to blame for slower game at Wimbledon, says Nadal
Federer bags more records as he downs Pouille to reach last 16
Dominant Nadal brushes aside Tsonga
Jo-Wilfried Tsonga v Rafa Nadal - match stats
Brutal Barty hungry to extend dominant run
The real Serena finally shows up at Wimbledon
Less proves more as Kvitova rolls on
Gauff digs deep to continue dream run
Wimbledon crowd go loco for Coco
Mature Gauff still a teenager inside
Kyrgios shows softer side after mixed exit
Best quotes and fact of the day at Wimbledon
Aliassime out as Humbert sets up Djokovic tie
Djokovic survives hurricane Hurkacz
Serena, Murray’s doubles match rescheduled
Azarenka slams gender ‘inequality’ in schedules
Halep catches fire to dispatch Azarenka
Pella pulls out all the stops to beat Anderson
Pliskova uses ‘amazing’ serve to see off Hsieh
Raonic outserves Opelka in battle of big men
Saturday’s order of play at Wimbledon
Second seed Roger Federer defeated Frenchman Lucas Pouille 7-5 6-2 7-6(4) to become the first player in history to win 350 Grand Slam singles matches.
Earlier, Matteo Berrettini outlasted Argentine Diego Schwartzman 6-7(5) 7-6(2) 4-6 7-6(5) 6-3 in the longest match of the tournament at four hours 19 minutes.
Kazakhstan’s Mikhail Kukushkin dumped out Jan-Lennard Struff 6-3 7-6(5) 4-6 7-5 and American Tennys Sandgren stunned 12th seed Fabio Fognini 6-3 7-6(12) 6-3.
Local hope Jo Konta, who had defeated American Sloane Stephens in their three previous meetings this year, had to dig deep to down the American 3-6 6-4 6-1 and set up a last-16 clash with Czech Petra Kvitova.
1544 MURRAY-HERBERT LOSE IN SECOND ROUND
Andy Murray and Pierre-Hugues Herbert were beaten 6-7(4) 6-4 6-2 6-3 by the Croatian pair of Franko Skugor and Nikola Mektic in the men’s doubles second round.
Rafa Nadal, playing Jo-Wilfried Tsonga for the first time at a Grand Slam in more than 11 years, blasted past the Frenchman 6-2 6-3 6-2. The Spanish world number two takes on Joao Sousa or local favourite Dan Evans in the fourth round.
Czech Republic’s Barbora Strycova stunned fourth seed Kiki Bertens 7-5 6-1 to reach the fourth round for the first time since 2014, when she went on to make the quarters. It was Strycova’s first win over a top-five player in more than a year.
Serena Williams, seeking a record-equalling 24th Grand Slam crown, stayed on course with a comfortable 6-3 6-4 victory over Germany’s Julia Goerges in a rematch of last year’s semi-final.
“It’s been an arduous year for me so every match I’m trying to improve. Every time I go out there I try. I’m getting a really late start, but I try,” American Williams said.
It was the end of the road for Swiss 13th seed Belinda Bencic who was beaten 4-6 6-4 6-4 by Alison Riske.
Top seed Ash Barty swatted aside Briton Harriet Dart 6-1 6-1 to become the first Australian woman to make the fourth round of Wimbledon since Jarmila Wolfe in 2010.
Belgium’s 21st seed Elise Mertens also advanced with a battling 6-2 6-7(9) 6-4 victory over Wang Qiang.
Australia’s 11-times Grand Slam winner Rod Laver was presented with a miniature replica of the Wimbledon trophy on Centre Court to mark the 50th anniversary of his last title at the All England Club.
Laver won four Wimbledon titles and won all four Grand Slam singles tournaments in the same calendar year twice, in 1962 and 1969.
Eighth seed Kei Nishikori beat American Steve Johnson 6-4 6-3 6-2 to advance into the fourth round, with the Japanese breaking him six times and hitting 23 winners.
American Sam Querrey also went through in straight sets, beating Australia’s John Millman 7-6(3) 7-6(8) 6-3 after firing down 27 aces and hitting 52 winners.
Twice champion Petra Kvitova strolled into the fourth round with a 6-3 6-2 victory over unseeded Pole Magda Linette. Joining her was Spain’s Carla Suarez Navarro, who eased past American Lauren Davis 6-3 6-3.
Play began in bright sunshine with the temperature hovering around 22 degrees Celsius and a forecast high of 24C.
World number one Ash Barty is in action against Briton Harriet Dart on Centre Court (1200 GMT start) while twice champion Rafa Nadal meets Frenchman Jo-Wilfried Tsonga.
Roger Federer continues his quest for a ninth Wimbledon title when he meets Lucas Pouille in the third round. (Reporting by Shrivathsa Sridhar and Rohith Nair in Bengaluru; Editing by Ed Osmond and Clare Fallon)