At 18 years old, Canadian Leylah Fernandez has taken the U.S. Open by storm with major upset wins over Naomi Osaka and Angelique Kerber and advancing to the quarter finals. Watch The National live on YouTube Sunday-Friday at 9 p.m. ET Subscribe to The National: https://www.youtube.com/user/CBCTheNational?sub_confirmation=1 Connect with The National online: Facebook | https://www.facebook.com/thenational Twitter | https://twitter.com/CBCTheNational Instagram | https://www.instagram.com/cbcthenational More from CBC News | https://www.cbc.ca/news The National is CBC's flagship nightly news program, featuring the day's top stories with in-depth and original journalism, with hosts Adrienne Arsenault and Andrew Chang in Toronto, Ian Hanomansing in Vancouver and the CBC's chief political correspondent, Rosemary Barton in Ottawa.