Paes and the Czech Republic's Rikl defeated fifth seed Australian duo Wayne Arthurs and Paul Hanley 6-3, 6-2.
The 22-year-old Swiss survived a tricky first-round match with flashes of brilliance and plenty of determination.
Volkswagen told US dealers to halt sales of some 2015 diesel cars.
In other matches, VfL Wolfsburg edged past Hertha Berlin 2-0; promoted Ingolstadt snatched a last-gasp 1-0 win at Werder Bremen
'China was the elephant in the Oval Office and Trump would have sensed that Modi's foreign policy architecture has become disoriented sans the US' pivot to Asia,' points out Ambassador M K Bhadrakumar.
Mueller scores brace in is 200th Bundeliga match
Former world number one Rafael Nadal is feeling confident about his chances of competing for a third US Open title when the tournament starts in New York next week.
Armenia midfielder Henrikh Mkhitaryan scored twice as Borussia Dortmund thrashed Borussia Moenchengladbach 4-0 on Saturday to launch their season with a bang on coach Thomas Tuchel's Bundesliga debut with the club.
India has told an international tribunal that the case of two Italian marines, accused of killing two Indian fishermen off Kerala's coast, comes under its jurisdiction and Italy's contentions in this regard were "misleading".
A summary of sports events and sports persons, who made news on Saturday
Rafa Nadal says his mental stability has returned after a topsy-turvy year for the former world number one.
The International Olympic Committee remains confident the United States will deliver a bid to host the 2024 Summer Games despite Boston's withdrawal from the race on Monday.
The world number one beat 18-year-old Richard Gasquet to avenge his defeat in the quarter-finals of the Monte Carlo Masters last month.
Champions Bayern Munich opened up an eight-point lead in the Bundesliga at the start of the German season's one-month winter break by beating Hanover 96 1-0 on Saturday amid mounting speculation over the future of coach Pep Guardiola.
Check out Mr Burger and Ms King's wedding photographs from a marriage made in fast food heaven!
The ace striker has been called to the pre-tournament hockey camp after recovering from an injury.
Budapest will bid to host the 2024 Summer Olympic and Paralympic Games, the President of the Hungarian Olympic Committee and the Mayor of Budapest has announced in a joint letter to the President of the International Olympic Committee (IOC).
Leander Paes-David Rikl and Mahesh Bhupathi-Max Miryni scored contrasting wins to make the quarters.
Unseeded Olivier Rochus followed up his second round win over Albert Costa by beating Tim Henman.
The seventh seeded Thai lost to Spaniard Feliciano Lopez in the first round.
Check out the top footballers of the weekend...
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Rome's bid to host the 2024 Olympic Games was unanimously endorsed by the Italian Olympic Committee (CONI) in what bid president Luca di Montezemolo described as an important signal of support.
Clinton and Sanders, meeting for the debate in Brooklyn just days before the crucial presidential primary in New York on April 19, minced no words as they attacked each other.
Paris will be competing for the 2024 honours with cities including Boston, Hamburg and Rome, which lost out to Paris in the bidding contest when the French capital last got to host the games in 1924.
News of all that's transpired on and off the football field
Victory for the Netherlands in Friday's Euro 2016 qualifier in Latvia would have been seen as practically guaranteed after a successful World Cup in Brazil but a faltering qualifying campaign has precipitated a confidence crisis.
The thousands of Barcelona and Juventus fans streaming into Berlin's Olympic Stadium for the Champions League final later on Saturday were confident the showpiece would knock the FIFA scandal off the front pages and out of people's minds.
Bayern Munich scraped past Hertha Berlin 1-0 on Saturday.
The world No.1 crushed Ecuadorian baseliner Nicolas Lapentti in the second round.
Bayern Munich have all but secured their third consecutive Bundesliga title and victory over Hertha Berlin could see them clinch it as early as this weekend.
Juergen Klopp will leave Borussia Dortmund at the end of the season after a seven-year reign as coach which delivered two Bundesliga titles and a Champions League final.
Netaji Subhas Chandra Bose's grandnephew met Prime Minister Narendra Modi in Berlin and sought declassification of all secret files related to the freedom fighter, amid a row over reported snooping on the leader's close relatives.
Amid a row over snooping on close relatives of Subhas Chandra Bose, his grandnephew is likely to meet Prime Minister Narendra Modi in Germany on Monday, and try to demand declassification of all secret files related to the freedom fighter.
Paris is set to go ahead with a bid to host the 2024 Summer Olympic Games, the French capital's deputy mayor in charge of sports told Reuters.
Image Alert: Too much hotness ahead! You might need to switch on the air-conditioner.
A summary of sports events and sports persons, who made news on Tuesday.