NEW YORK -- Milos Raonic and Vasek Pospisil have met just a handful of times on the ATP Tour, but their rivalry runs deep.
The two Canadians will face off Thursday in the second round of the U.S. Open in their first Grand Slam match, and just the fourth on the top-tier men's tour.
Raonic, however, says their head-to-head feud goes back around 15 years as the two rose through the nation's tennis ranks.
鈥淚 can't remember the first time we played. Maybe as early as under-14,鈥 the 29-year-old from Thornhill, Ont., said Tuesday after his first-round victory over Leonardo Mayer. 鈥淚 don't know if we played under-12.
鈥淚 think he won pretty of all them through our junior career, then I won pretty much all of them except the last one through our professional careers.鈥
鈥淵eah, it's going to be a fun match,鈥 he added.
The all-Canadian matchup in the second match of the day (approximately 1 p.m. ET) at Louis Armstrong Stadium comes after all five of the country's singles players advanced to the second round of their respective draws. Montreal's Felix Auger-Aliassime and Denis Shapovalov of Richmond Hill, Ont., also won their men's opening matches, while Leylah Annie Fernandez of Laval, Que., won her opening women's match to pick up her first Grand Slam victory.
Shapovalov, the 12th seed in New York, faced Kwon Soonwoo of South Korea later Wednesday.
Pospisil actually has four professional win over Raonic, though most of them came at lower-tier events. The 30-year-old from Vancouver beat Raonic at three ITF Futures tournaments in 2009 and 2010, including the final of the 2010 Canada F3 in Sherbrooke, Que., before Raonic beat Pospisil at a ATP Challenger Tour event in Lexington, Ky., later that year.
At the ATP Tour level, Raonic won the first two meetings, including a semifinal match at the 2013 Rogers Cup in Montreal, before Pospisil was victorious in the second round of the 2018 European Open in Antwerp, Belgium.
鈥淭here's a little bit more tension, a little bit more emotion, that kind of thing,鈥 Raonic said of facing Pospisil. 鈥淚 think we're also both pretty well equipped to put that aside and really focus on the tennis.鈥
Raonic, ranked 18th in the world, came into the U.S. Open on a high after advancing to the final of the Western & Southern Open last week at the same venue, where he lost a hard-fought match with top seed Novak Djokovic.
World No. 94 Pospisil, meanwhile, has enjoyed a career resurgence since returning from surgery for a herniated disc last year. He was instrumental in helping Canada reach the 2019 Davis Cup final and reached his second career final earlier in February in Montpellier, France before the ATP season was suspended due to the COVID-19 pandemic.
Pospisil played his first match since late February on Tuesday and said he felt a bit rusty but was ultimately happy with his first-round win over Philipp Kohlschreiber.
鈥淚 was pleasantly surprised how I played, because I didn't feel great in practice preparing the last week or so,鈥 Pospisil said after Tuesday's win. 鈥淚t's always tough coming back after not playing a match for six months or whatever, but overall I'm pretty pleased.鈥
It's the first time four Canadian men are in the second round of a Grand Slam since five players advanced out of the first round of the 1959 US Championships.
Raonic thinks the Canadians in New York are well prepared to make a deep push into this year's U.S. Open.
鈥淚 think the opportunity sort of comes from the players that took the appropriate time and the appropriate measures to most maximize the training for the last five months, however long it's been,鈥 he said.
鈥淚 know Felix was training. I know all the Canadians have been training. Denis, as well. Me and Denis were both in The Bahamas towards the last part of it. I think those are the ones that are going to have, let's say, the greatest privilege or opportunity.鈥
Auger-Aliassime faces former world No. 1 Andy Murray of Britain on Thursday night at Arthur Ashe Stadium, while Fernandez faces No. 2 seed Sofia Kenin of the United States in the first match of the day at Ashe - the biggest court at the facility. Almost all of the stadium's 23,771 seats will be empty with no fans allowed on site.
鈥淚t's going to be a little bit more pressure on me. She is a young rising star, playing some really good tennis,鈥 Kenin said of facing the 17-year-old Fernandez. 鈥淚t's going to be a good matchup, and hopefully I can do well.鈥
This report by The Canadian Press was first published Sept. 2, 2020.