Fresh off his first ATP Tour title, Montreal's Gabriel Diallo continued his winning ways with a 6-1, 3-6, 6-4 first-round victory over British wild-card Billy Harris on Tuesday at the HSBC Championships in London.Diallo's victory capped a successful day for Canadians at ATP 500 grass-court tournaments after Félix Auger-Aliassime and Denis Shapovalov won their opening matches at the Terra Wortmann Open in Halle, Germany.The 23-year-old Diallo, who won the ATP 250 Libema Open last week, out-aced Harris 11-10 and won 85 per cent of first serve points.He scored two more breaks than Harris, converting four of seven chances while saving four of the six he faced.Diallo, who had a career-high ranking of No. 44 entering the tournament, will next face Jiri Lehecka of Czechia.In Halle, Montreal's Auger-Aliassime fired 17 aces in a 6-3, 6-7 (6), 6-1 first-round win over Serbian qualifier Laslo Djere.After losing a closely contested second set, Auger-Aliassime won 93 per cent of first serve points and converted two of his three chances to break in a dominant third set.The win was Auger-Aliassime's first over Djere in three tries. The world No. 27, who was coming off a run to the semifinals last week in Stuttgart, will next face the winner of a match between eighth seed Karen Khachanov of Russia and Belgium's Zizou Bergs.Shapovalov fought his way into the second round with a 6-4, 4-6, 7-6 (4) upset of sixth seed Ugo Humbert of France.The No. 31 from Richmond Hill, Ont., won on his first match point on a forced error when Humbert returned the Canadian's serve wide. Shapovalov improved his record against Humbert to 4-2.Humbert had a chance to serve for the match with a double break point in Game 8 of the third set, but Shapovalov recovered to hold and tie it 4-4.Shapovalov will next face No. 24 Flavio Cobolli of Italy.Elsewhere, Bianca Andreescu of Mississauga, Ont., was defeated in the first round of the WTA 500 Berlin Tennis Open 6-4, 6-3 by Amanda Anisimova of the United States.Anisimova broke Andreescu three times on four chances to cruise to victory in 65 minutes.
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