On the other side of the net would be the seasoned Daniel Nestor and Pospisil or Bradley Schnur, who is yet to play his debut Davis Cup match.
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.
Schnur not only never had played in a Davis Cup before, he'd never played in a best-of-five series.
As far as the singles is concerned, Denis Shapovalov - who set the tennis the world alight by taking out Rafael Nadal at the Montreal Masters - would be the man on whose soldiers the Canadian hopes rely.
"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 chose to go on the tour this summer.
And Denis Shapovalov, of Richmond Hill, Ont., who went from No. 250 to No. 51 and had lost both of his matches to Great Britain including the infamous implosion when he defaulted and the match awarded to the visitors in February in Ottawa, when he batted a ball in frustration and struck chair umpire Arnaud Gabas of France, breaking a bone in the eye socket. Shapovalov handed Bhambri a break in the fourth set with sluggish errors and the Indian marched on to level the match. Schnur, 22 and playing in his maiden tie, broke Ramku mar in the 11th game to take the first set.
He won the third set 7-6 (8-6) as Shapovalov started to come unraveled. "Take the foot off the gas pedal off and put in lot of returns", Shapovalov said after the match. He might be higherranked than both the Indians at number 82 but he is coming into the tie after five straight loses on the ATP Tour, the last being in the first round of the US Open.
Shapovalov eventually won the second set 6-4, putting Canada in a good position to level the tie. "We only had best-of-threes in college". Though Shapovalov won the first two sets, Bhambri fought back, forcing a fifth and decisive set in the near four-hour match before Shapovalov finally came up with the victory.
India captain Mahesh Bhupathi has sprung a surprise by teaming up Rohan Bopanna with Purav Raja instead of Saketh Myneni for the doubles rubber, to be played on Saturday.
If India's singles pile on similar pressure on the final day, the underdogs may just find themselves in the World Group.