The Indo-Czech pair lost 6-3, 3-6, 6-7(7) to Julian Knowle of Austria in the first round
The top seeds were shocked by Tommy Haas of Germany and Jurgen Melzer of Austria in the \nPilot Pen tournament.
The top seed edged a 7-6, 7-5 victory over American James Blake in the first round of the Cincinnati Masters.\n
Top seeded Roddick beat Austria's Jurgen Melzer while Grosjean scored over Nicolas Lapentti in the semi-finals of the U.S. Men's clay court championships.
Top seed Andy Roddick blasted his way into the last four with a 6-4, 6-1 victory over Peru's Luis Horna.
Yuki Bhambri enjoyed a fruitful day at the $100,000 Odlum Brown Vanopen as he reached the singles semi-final with a hard-fought win over Farrukh Dustov and also made his second consecutive doubles final at the Challenger level in Vancouver.
The US Open champion gave the US a 2-0 lead over Austria on the opening day of their first-round Davis Cup World Group tie.
World No 3 Andy Murray remained on course for a first career clay court title.
Nadal was leading the match 6-1, 2-0 when Correno Busta decided he had had enough.
Andy Murray embarks on his first Grand Slam campaign as world number one with much stronger title credentials, even if he has lost five finals at Melbourne Park.
Unheralded Joao Sousa completed a fairytale run at the Malaysian Open on Sunday when he beat France's Julien Benneteau 2-6, 7-5, 6-4 in the final to become the first Portuguese to win an ATP Tour title.
On a largely disappointing day for Indian tennis players, Leander Paes, Rohan Bopanna and Sania Mirza lost their respective doubles matches in the second round of the Australian Open, leaving the country's challenge restricted to the mixed doubles competition.
A summary of sports events and persons who made news on Thursday
Serbia's Novak Djokovic is the top seed in the men's draw which includes five-times US Open champion and 17-times Grand Slam winner Roger Federer as seventh seed - his first time the Swiss has been placed outside the top three in a Grand Slam in over ten years.
India's Leander Paes and Rohan Bopanna crashed out of the Japan Open following a straight set defeat against Ivan Dodig and Marcelo Melo, in Tokyo on Thursday.
The sweet spot of Andy Murray's racket was put through its paces as he signed of his first week at Wimbledon by stylishly dispatching Spain's Tommy Robredo 6-2, 6-4, 7-5 to move into the last 16 on Friday.
A dominant Rafael Nadal arrived at one career milestone on Thursday but the speed of the Spaniard's rampage through the early rounds of the French Open suggests his eyes are fixed firmly on another more significant one.
Third seed Rafael Nadal battled through mid-match cramps for more than an hour before he lurched into the third round of the Australian Open with a 6-2, 3-6, 6-7(2), 6-3, 7-5 victory over American qualifier Tim Smyzcek.
Rafa Nadal got his usual confidence boost from Nicolas Almagro at Roland Garros, reaching the third round with a 6-4, 6-3, 6-1 victory -- his fourth without dropping a set against his Spanish compatriot on the Paris clay.