The Canadian win the U.S. Open Boys' title on Sunday in New York, becoming the second Canadian to win a Grand Slam junior title this season.
No. 3 seed was crying and shaking minutes before the US Open final.
"(Stan) kept his cool. I think that's what decided the match," said world No. 1.
"It is an emotional day," Bethanie Mattek-Sands said after winning US Open doubles title.
Players and tennis celebs took to Twitter to congratulate Angelique Kerber on her second Grand Slam title.
Keep up with all the action from the final day of the 2016 U.S. Open. We'll be bringing you all the social media buzz, highlights and more from the men's final, women's doubles final and junior finals, too!
Will it be Angelique Kerber or Karolina Pliskova who wins the final major of 2016? Keep up with the Tennis Now Live Blog and find out.
