As rising Canadian tennis star Victoria Mboko prepares for her final against Naomi Osaka at the National Bank Open in Montreal, her childhood coach, Pierre Lamarche, recalls her drive, focus and how much the up-and-coming star hated to lose »»» Subscribe to CBC News to watch more videos: http://bit.ly/1RreYWS Connect with CBC News Online: For breaking news, video, audio and in-depth coverage: http://bit.ly/1Z0m6iX Follow CBC News on TikTok: https://bit.ly/3TnHioe Follow CBC News on Twitter:

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