15-Year Old Coco Gauff: YOUNGEST WTA Champ Ever!

15-year-old Coco Gauff knows there are NO DAYS OFF in her pursuit to become the NEXT Serena Williams. COMMENT with your favorite tennis player! MORE No Days Off → 7-Year-Old Football PRODIGY: http://whistle.video/NoDaysOffBlaze → 11-Year-Old Boxing Prodigy: http://bit.ly/2JcvoKp → World's Fastest BMX Rider: https://whistle.video/FastestBMXRider → 7-Year-Old One Armed Golfer: https://whistle.video/2vM1mEo → 15-Year-Old Bryce Harper: http://whistle.video/2MVFs8d → Homeless Shelter to Jr. Olympics: http://bit.ly/NoDaysOffS2E1 → Fastest Cup Stacking Ever: http://bit.ly/2IidjH3 → Hitting a 250mph Fastball: http://bit.ly/2w69a7g → 11-Year-Old With A College Football Scholarship: http://bit.ly/2r9WCH4 → First Woman To Play Pro Baseball: http://bit.ly/2Fu0QOt SUBSCRIBE to Whistle for more awesome videos! - http://goo.gl/y2JNsG Still want more Whistle? Follow us on: