Delhi's heat and humidity and the uneven bounce of the grass surface could play a major part in the Asia-Oceania Davis Cup match against Japan.
Andy Murray's decision to miss the Davis Cup World Group tie against Argentina has been criticised by his brother Jamie.
Wayne Arthurs rode his booming serve to a 7-6 6-4 6-3 victory over Mounir El Aarej to give Australia a 1-0 lead over Morocco in their Davis Cup World Group playoff.
Having fired 20 aces in his straight-set victory over the Czech Republic's number one, Jiri Vesley, in the Davis Cup World Group play-off tie in Delhi on Friday, Somdev Devvarman declared it was one of the best serving days of his career.
Both countries took a 2-0 lead over The Netherlands and Argentina respectively in their Davis Cup World Group quarter-finals.\n\n
The world No. 2 overcame shaky serving to beat Thomas Enqvist in the Davis Cup World Group quarer-final.\n\n
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.
A round-up of Friday's action in the UEFA Nations League.
Victor Hanescu and Victor Crivoi beat Somdev Devvarman and Prakash Amritraj respectively to give Romania a decisive 2-0 lead in the Davis Cup play-off match. Hanescu thundered his way to a 6-3, 6-1, 6-0 win over young Devvarman after Crivoi had got past an erratic Amritraj 7-5, 5-7, 6-2, 6-2 in the first singles of the day.
Rohan Bopanna teamed up with Canada's Denis Shapovalov to enter the quarter-finals of the Rotterdam Open
Shifting of India's only ATP event from Chennai to Pune after 21 years has disappointed the Amritraj brothers.
Ivan Ljubicic inspired Davis Cup champions Croatia to an unassailable 3-0 lead over Austria in the World Group first round.
Holders Croatia held a 2-0 lead over Austria after the opening singles in the Davis Cup World Group first round.
Sweden captain Mats Wilander termed the tie a 'bad propaganda' for the sport because of the surface it was played on
The player and captain Leander Paes acknowledged miscommunication and resolved to put the issue behind them ahead of the Davis Cup tie against Sweden.
Rohan Bopanna replaces Harsh Mankad in Davis Cup team for World Group play-off.
Keeping the 2020 Tokyo Olympics in mind, the sports ministry has included the doubles duo of Rohan Bopanna and Divij Sharan, who won the Asian Games gold last year, have been kept in TOPS scheme.
Smriti Mandhana isn't actually known to be the most prolific T20 player -- her career T20 International average of 27.32 is middling at best. There have been failures too, but her ability to analyse and assess them honestly is a rarity in modern sport.
Briton Tim Henman bowed out of grand slam tennis with a second-round defeat at the U.S. Open on Friday, but said he would be leaving the sport content that he had made the most of his potential.
The Indian ace said his match against Martin Verkerk in the Davis Cup could have gone his way.
'Rafa is okay, nothing serious. He did not have any stomach upset. He was playing in the US Open with the same wrist issue. It is getting better and better but still it is sometimes painful. We still have two days of competition. So he might play one of these days'
Thomas Johansson beat Rohan Bopanna 7-6, 7-6, 7-6 in the rain-affected tie.
Jonas Bjorkman beat Prakash Amritraj 6-4, 6-4, 6-4 to help Sweden take a 1-0 lead in the Davis Cup World Group play-off.
The U.S. took a winning 3-0 lead over Spain in their Davis Cup world group quarter-final tie on Saturday when Bob and Mike Bryan beat Feliciano Lopez and Fernando Verdasco 7-5 6-3 3-6 7-6.
Glimpses from Sunday's Nations League matches.
Belgium became the first European team to qualify for next year's World Cup when a Romelu Lukaku header gave them a 2-1 win away to Greece on Sunday with the goals coming in a five-minute second-half spell.
Top-ranked Belgium slammed eight goals against Belarus and the Netherlands crashed seven past Gibraltar
Todd Woodbridge and Wayne Arthurs defeated Mounir El Aarej and Mehdi Tahiri to ensure Australia remain in the World Group next year.
Bhupathi said AITA did not have the courtesy to inform him that he won't continue as captain.
These photos prove we live in a bizarre world.
Ravaged by injuries, India's star singles player Somdev Devvarman announced his retirement from professional tennis, bringing an abrupt end to what was once a promising career.
The Indian tennis ace hoped to come back on court within two to three weeks.
Rohan Bopanna lost in five sets to Martin Verkerk while Prakash Amritraj was beaten by Sjeng Schalken in straight sets in the Davis Cup play-off match.
Fritz delivers as US win inaugural United Cup crown