Rohan Bopanna has opted out of the Davis Cup World Group play off-tie, scheduled to be held next weekend.?He has now been replaced by Sumit Nagal. Nagal last participated in an ITF Futures event in Reggio Emilia, where he reached the semi finals.The 19 year-old Nagal won the boys doubles title at Wimbledon in 2015 and will be appearing in his maiden Davis Cup tournament.Citing a knee injury, Bopanna tweeted, Unfortunately I had to withdraw from the Davis Cup tie against Spain next week in Delhi. Have been asked to rest my knee for next 10 days.Unfortunately I had to withdraw from the Davis Cup tie against Spain next week in Delhi. Have... https://t.co/xmNlIglIYL- Rohan Bopanna (@rohanbopanna) 10 September 2016The AITA (All India Tennis Association), in an official statement, confirmed this development stating, Rohan Bopanna has informed the Chairman Selection Committee that due to a knee injury which he suffered during US Open, he has been advised two weeks rest from competition.Hence he has requested for withdrawal from the Davis Cup tie against Spain which is going to be held in Delhi from 16-18 September 2016. His request was considered and accepted by the Committee.?It was also decided by the Committee to include Sumit Nagal in the four playing member team for the Davis Cup tie against Spain, the release further added.?Calling the injury unfortunate, Indias Davis Cup coach Zeeshan Ali told PTI, That is part and parcel of professional. Unfortunate it has happened one week before the tie.Bopanna had last participated in the US Open where he reached the quarterfinals in the mixed doubles with Gabriela Dabrowski. He had lost in the second round of the mens doubles where he was partnering Frederik Nielsen.India will play Spain in the tie with singles and doubles rubber scheduled for 5pm and 7pm starts, respectively, where Bopanna was scheduled to play the doubles match with Leander Paes.Fake Yeezy China . Anthony Davis had 31 points and 17 rebounds in his seventh straight game with more than 20 points, but that was only enough to keep the Pelicans competitive into the final minutes. Andrew Bogut had 10 points and 15 rebounds for Golden State, which rebounded from a loss a night earlier in Oklahoma City and snapped a two-game skid. Cheap Yeezy China . 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"I think everybody was kind of watching," catcher David Ross said. "Demp (Ryan Dempster) came out before he went to the bullpen and was just yelling that they lost.ESPN looks at the potential strategy options for the Brazilian Grand Prix.Wet weather on race day morning means the teams slick-tyre strategies are likely to go out of the window. After a scorching hot Friday the teams understanding of the tyres at Interlagos is skewed given the 17C air temperature on Sunday morning, but the forecast is likely to mean the intermediate and full wets become the tyres of choice.On the off chance it does dry up ahead of the start of the race, the key to all strategies will be finding the balance between using the soft and medium tyres over a two-stop strategy (the hards are essentially redundant here, unless you are trying a one-stop).Pirelli recommends that the following numbers of laps are not exceeded on each compound:Hard = 38 laps Medium = 35 laps Soft = 18 lapsAnd on this basis, the possible pit-stop strategies predicted by Pirelli are as follows:QUUICKEST Three-stopper: 3 stints on soft of 15 laps + 1 stint on medium of 26 lapsSECOND-QUICKEST Two-stopper: 1 stint on soft of 15 laps + 2 stints on medium of 28 lapsSLOWEST Two-stopper: 1 stint on soft of 15 laps + 1 stint on medium of 26 laps + 1 stint on hard of 30 lapsAlso possible One-stopper: 1 stint on medium of 33 laps+ 1 stint on hard of 38 laps It was telling that none of the teams used intermediate tyres during the damp start to final practice and instead opted for the unfavoured full wets.dddddddddddd This was a strategy to save all four sets as inters for the race in the event that the conditions are mixed, while still having two sets of new full wets available. Should the track dry out, the drivers have the following slick tyres available. ' ' '