The unseeded Spaniard beat Hubert Hurkacz (25) 3-6 6-3 6-3 to win the ATP 1000 event in Montreal, which is part of the US Open Series leading up to the year's final Grand Slam.

"Not just in the US Open Series, but in the rest of the season it's very important," Carreno Busta, who reached the semi-finals of the U.S. Open in 2017 and 2020, told reporters.

"I won 1,000 points. I won a trophy, a very important trophy. My game during all the week was very, very high. I play really, really good from the first match against (Matteo) Berrettini until the last one against Hubie.

"I think I just need to continue this way, believe in myself, being aggressive, and for sure I will have chances to win matches in this season and I hope in the next ones also."

He said his long wait for a maiden Masters title had not weighed on his shoulders, pointing to compatriot David Ferrer, who had a career-high ranking of third but won just one Masters tournament.

"I know it's not easy to win these kind of titles," Carreno Busta said. "Not everyone has a Masters 1000 on his career. For example, Ferrer was world number three and just won one.

"I know it's very difficult to win it. It wasn't extra pressure to have this title. But it's true that now I have it and I will enjoy it, no?"

The US Open main draw begins on August 29th.