The 19-year-old from Mississauga, Ont., jumped one spot to No. 4 in the rankings on Monday following a week off.
That pushes her one spot ahead of her career-best No. 5 ranking, which tied a Canadian record set by Eugenie Bouchard in 2014.
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Ranked outside the top 150 entering the season, Andreescu rocketed up the rankings with tournament wins at Indian Wells, Calif., and Toronto followed by her first Grand Slam win at the U.S. Open in New York last month.
Andreescu had a 17-match win streak snapped when she lost a quarterfinal match to Naomi Osaka at the China Open earlier this month.
The Canadian is scheduled to return to action at the WTA Finals, which begin on Sunday in Shenzhen, China.
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Milos Raonic reached No. three within the males’s rankings in 2016, the most effective rating achieved by a Canadian man.
On the lads’s aspect, Denis Shapovalov of Richmond Hill, Ont., jumped seven spots to No. 27 after capturing the Stockholm Open on Sunday for his first profession ATP Tour title.
Montreal’s Felix Auger-Aliassime is the highest Canadian at No. 18.
Raonic has dropped to No. 32.
Shapovalov, Auger-Aliassime and Raonic all are entered within the Erste Financial institution Open this week in Vienna, Austria.
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