The winner of the quarter-final between Bhupathi-Mario Ancic and Paes-Aisam Qureshi, who were slated to meet Gremelmayr and compatriot Simon Greul, will receive a walkover into the final.
Top seed Juan Martin del Potro will play sixth seeded American Sam Querrey in the Auckland Open final after both advanced to the title match in contrasting style on Friday.
Halep through but Stephens exits in Cincinnati
The world number one crushed Argentina's Juan Martin del Potro 6-1, 6-4 in the Swiss Indoors second round.
His great rival Roger Federer had already maintained his regal progress earlier on the showcourt and Serena Williams then followed with another thumping win.
Feliciano Lopez beat an ailing Juan Martin del Potro after David Nalbandian's straight sets win over David Ferrer in the opening rubber of the Davis Cup final.
Top seeded Argentine Juan Martin del Potro moved a step closer to the successful defense of his Swiss Indoors title when he beat Marcos Baghdatis 6-1, 6-2 for a third time this season.
World number 19 Moya battled past Argentine Juan Martin Del Potro 7-5 3-6 7-5 in their third-round match, while Hewitt, ranked 20, eased to a 6-3 6-3 win over Austrian Juergen Melzer.
- Czech Tomas Berdych stunned second seed Andy Roddick 6-7 7-5 7-6 on Saturday to set up a Japan Open final against Argentine Juan Martin Del Potro. Fifth seed Del Potro, who has won 29 of his previous 30 matches, beat Frenchman Richard Gasquet 6-3 4-6 7-5 to book his spot in Sunday's final.
Argentina beat Russia 3-2 while Spain ended the reign of defending champions United States, winning the other semi-final 4-1.
Juan Martin del Potro demolished Igor Andreev in straight sets on Sunday to give Argentina a 3-2 win over Russia and send them into a Davis Cup final against Spain.
Andy Murray roared in relief as he celebrated reaching his first grand slam semi-final after ending the U.S. Open campaign of Argentine teenager Juan Martin Del Potro 7-6, 7-6, 4-6, 7-5 on Wednesday.
Former US Open champion Del Potro fired down 11 aces and did not face a break point during the one hour, 33 minutes match.
Defending champion Lleyton Hewitt lost to French qualifier Jo-Wilfried Tsonga in his first match at the Queen's grasscourt tournament.
Kuznetsova unable to defend Washington title over 'visa issues'
Andy Roddick and Nadia Petrova suffered a recurring nightmare, sliding out in the first round for the second year running.
The Spaniard plays Juan Martin del Potro of Argentina in the first round on Tuesday.
Alexander Zverev became the first German to reach the last four at the ATP Finals for 15 years as he beat American John Isner 7-6(5), 6-3 at the O2 Arena on Friday.
Rafael Nadal and Andy Roddick advanced into the last eight of the Miami Masters.
World number six James Blake called on the ATP Tour to change the rules at round-robin tournaments after a bizarre 24 hours when he went out of the Las Vegas Open, was reinstated and then eliminated again.
James Blake was given a place in the Las Vegas Open quarter-finals after his opponent retired with breathing problems.
Rafael Nadal continued to scythe his way through the Shanghai Masters on Thursday, reaching the quarter-finals with a 6-3, 6-1 thrashing of temperamental Italian Fabio Fognini.
Top seed Juan Martin del Potro of Argentina took advantage of a long rain delay to defeat Germany's Tommy Haas 7-6(4), 6-3 on Saturday and reach the final of the $1.3 million Citi Open.
Serena Williams stayed on track for an eighth Wimbledon title as she fought back to beat Italian Camila Giorgi 3-6, 6-3, 6-4 in a fiercely contested quarter-final.
Djere is ranked higher than Ramkumar at number 86 but is yet to win a match in Davis Cup. On the other side, Ramkumar is placed 135 in the world but is far more experienced, having played six ties with a 7-5 Win-Loss record.
Marin Cilic overcame Federico Delbonis 6-3, 7-5, 3-6, 1-6, 6-2 after a titanic tussle in the opening singles rubber to give hosts Croatia a 1-0 lead over Argentina in the Davis Cup final on Friday.
Juan Martin del Potro said on Monday he will not play in Argentina's Davis Cup playoff tie in September due to his differences with the Argentine Tennis Association (AAT).
The 2009 champion who will next face Roger Federer, saved two match points in the fourth set of what was arguably the best of the tournament so far.
World No 55 Haase improved to a 2-2 career record against Zverev, including victories in their last two meetings.
The ATP Tour got on board and last month fans were able to bid for private sessions with celebrated tennis coaches on-site during tournaments in 2021.
Here is a timeline of Djokovic's decline since the last of his 12 Grand Slam titles.
Juan Martin del Potro's comeback trail will collide with Roger Federer's after the Argentine won his opening Miami Open match against compatriot Guido Pella on Wednesday.
World number two Novak Djokovic expects Stanislas Wawrinka and Andy Murray to lift their game at the French Open despite failing to make an impact so far in the clay court season.
Despite the world number nine's withdrawal, a strong field is expected for the event, including Roger Federer, Kei Nishikori, Milos Raonic, Grigor Dimitrov and Juan Martin del Potro, who have all confirmed their participation.
IMAGES from Day 9 of the US Open matches played on Tuesday
Tournament officials said there was no heat rule in effect on Friday for the first time in three days, with cloud cover expected to bring cooler temperatures.
World number two Novak Djokovic hammered Swiss Stanislas Wawrinka 6-1, 6-4 to reach the Paris Masters semi-finals on Friday.
Rafael Nadal gave Russian teenager Andrey Rublev a tennis lesson on Wednesday, racing into the semi-finals of the US Open with a ruthless 6-1, 6-2, 6-2 win that cleared the path for a possible showdown with rival Roger Federer.
Live tennis action is a fading memory during the coronavirus shutdown but 20,000 fans tuned in to watch old rivals Novak Djokovic and Andy Murray chew the fat on Instagram on Friday. Sitting on their sofas at home, the duo spent an entertaining hour reminiscing about some of the classics in their 36-match series, painful losses and even came up with the perfect tennis player.