The 18-year-old Canadian, who practices visualization every morning, upset three-time major champion Angelique Kerber 6-4, 3-6, 6-4 to win the BNP Paribas Open on Sunday, becoming the first wild-card victor and second-youngest to claim the title in tournament history.
The 18-year-old Canadian fought off exhaustion and held her nerve to triumph 6-4 3-6 6-4 over the three-time Grand Slam champion, becoming the first wildcard victor of the prestigious event.
Andreescu, who played with an injured right shoulder and cramp, became the first wildcard and youngest to clinch the WTA Indian Wells title, one of the Tour's most prestigious Premier Mandatory tournaments.
Andreescu started the third set much better, holding in her first two service games including coming back from 0-30 to go up 2-1.
Last year, Andreescu was the first ever woman to be named the Mississauga Sports Council's professional athlete of the year.
Appearing exhausted and nervous, Andreescu called for her coach, who urged her to make Kerber play every point.
"I just want to enjoy this moment, because I don't want to take anything for granted", said Andreescu.
"It's been a insane ride, truly a Cinderella story", she added.
Andreescu finally held once again for a second game of the second set, but she was really made to work to try and extend the set for 3-5 which she did. "Now to have my name in front of so many champions it means the world to me", she added.
Pakistan hails NZ PM’s conduct after terror attack
Facebook , the world's largest social media network, has said it removed 1.5 million videos within 24 hours of the attack. Four days after the attack, relatives were anxiously waiting Tuesday for word on when they can bury their loved ones.
She showed no sign of nerves as she opened the match with a break of Kerber's serve. He just needed to convince her that she had the fight, that she had the strength, that she had to go for every point.
Andreescu kept up the momentum in the decider, however, saving nine out of 10 break points and wrapped up the win after two hours and 12 minutes.
Andreescu, 18, also was searching for answers against an experienced veteran who's considered one of the best counter-punchers in the game.
Another changeover where the trainer came out, and she worked on Andreescu's leg. Kerber still had to hold to extend the match, but the Canadian ripped a forehand victor to set up a fourth match point and took the match. Andreescu called out her coach Sylvain Bruneau on the changeover and said that she could barely move. "I just want to savor this".
"Like I said before, you never know what next week can bring".
Thiem trailed 4-3 and 5-4 in the third set before breaking Federer with a forehand victor to go up 6-5.
"It just feels unreal what happened", Thiem said.
The sudden flood of attention being directed at Andreescu is reminiscent of that given to other Canadians when they burst onto the tennis scene in recent years, including former women's world number five Eugenie Bouchard and men's No. 3 Milos Raonic.