Leave it to 21-year-old Vancouver native Vasek Pospisil to halt Canada's oh-fer streak at the U.S. Open.

Pospisil, making his Grand Slam debut, advanced to the second round Wednesday with a relatively easy straight-set win over Lukas Rosol of the Czech Republic. Pospisil posted the 6-1, 6-2, 6-1 decision over the 65th-ranked Rosol in just 82 minutes. He is now the last Canadian standing in either singles draw.

Earlier this week, Canadians Aleksandra Wozniak, Rebecca Marino and Frank Dancevic were eliminated from the final Grand Slam of the year, leaving Pospisil as the lone hoser still playing in Flushing Meadows.

Riding 13 aces and 13 winners, Pospisil won his fourth straight match at the U.S. Open. His first three wins, though, came in the qualifying rounds.

Pospisil, ranked a career-best 143rd in the world, will have a tougher test in the second round. He's scheduled to face Spain's Feliciano Lopez, the No. 25 seed and a straight-set winner over Tatsuma Ito of Japan.