Bopanna and Raja, who will play only his second Davis Cup tie, will take on seasoned Daniel Nestor and Pospisil.
Debutant Schnur out up a confident display to take the first set 7-5, but Ramkumar came back to win the second set in a closely fought tie-breaker.
"It's been a insane month for me", the 18-year-old said.
Yuki turned the match on its head after being down by two sets and a match-point in the third set but eventually lost 6-7 (2), 4-6, 7-6 (6), 6-4, 1-6 to World No. 51 Denis Shapovalov - an audacious performance in a three-hour-52-minute battle. Alas, he did it his way, dropping the third and fourth sets to stretch this one well past midnight Eastern, as a Northlands Coliseum crowd of around 6,000 dwindled by more than half by the time the final service ball was tossed.More news: Donald Trump's Tweet On London Train Bombing Just Speculation, Says Britain Minister
With Canada trailing 1-0, Shapovalov defeated Bhambri in a five-set thriller, the first match of Shapovalov's career that has gone the distance.
The Canadians now lead the tie 2-1, with a pair of singles matches wrapping up play on Sunday.
However, the recent Davis Cup record for the World No. 82 Canadian at home has been impressive.
With experienced Vasek Pospisil unavailable for singles duties because of a bad back, Canada fielded two players who had never won a live Davis Cup rubber - a baptism by fire which could have led to a 2-0 lead for India.
"Probably not converting on those two break points when I had it 6-5 and five-all in the second set", said the kid who played college tennis in North Carolina until he made a decision to go on the tour this summer.More news: Katrina Kaif talks about her journey in 'Tiger Zinda Hai'
"It was my first one", he said of the best-of-fives.
The Sports Ministry has left out veteran Leander Paes and Saketh Myneni from the initial list of tennis players, who have been chosen for monthly allowance for their preparations for the next year's big-ticket events and the 2020 Tokyo Olympics.
Bhambri won the fourth set 6-4 and suddenly Canada in deep trouble going into a fifth set.
He won the third set 7-6 (8-6) as Shapovalov started to come unraveled.
The Canadian defeated Bhambri 7-6 (2), 6-4, 6-7 (8), 4-6, 6-1 in a match that lasted almost four hours. And what we watched Friday night will make Sunday's single games no place for a nervous Canadian, regardless.More news: PlayerUnknown's Battlegrounds breaks Steam record for most concurrent players on the service
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