Rose Mountain overthrew Frances Tiafoe, who placed first in the qualifiers.
Finland tennis star Emil Ruusuvuori took a crushing victory over the United States Frances Tiafoesta In the qualifiers for the Toronto Masters 1,000 tournament.
The overturning of the first place qualifier guaranteed Ruusuvuori a place in the tournament.
Rose Mountain, ranked 69th on the world list, knocked down Tiafoe, who was 16th, 6-1, 6-4. The match lasted an hour and 18 minutes.
Rose Mountain the opponent in the 48-player chart will emerge later. Russia is ranked No. 1 in the Toronto tournament Daniil Medvedev.
The tournament starts on Monday.