Bianca Andreescu showed her fighting spirit to overcome Belinda Bencic to reach the US Open final.
The 19-year-old edged the first-set tiebreak before coming from 5-2 down in the second to clinch a 7-6, 7-5 victory in over two hours on court.
It marks yet another huge leap in Andreescu's career, having been ranked outside the top 200 at this point last year.
But in her first US Open tournament, she will face 23-time Grand Slam champion Serena Williams in Saturday's final.
It was a close-run contest in the first set, with Bencic edging the play and ensuring her play was as error-free as possible.
In Pictures | 2019 US Open Tennis
Andreescu, on the other hand, was constantly facing the threat of a break and had to save six break points to keep herself afloat.
Bencic missed her chance to wrap up the set at 6-5 with a set point and when it went to a tiebreak, the 22-year-old struggled to cope with the tense atmosphere and lost out 7-3 in the tiebreak.
The Swiss regrouped early in the second set and began her fightback, locking down a double break at 4-1 and then at 5-2.
Many thought Bencic would have gone on to force a deciding set when she stole back the double break at 5-2.
But Andreescu found something extra, digging deep to make an impressive comeback to 5-5.
The Canadian could feel the confidence flowing through her as she took a 6-5 lead and on her third match point, sent a stunning forehand into the corner. Bencic couldn't get it back and the Canadian struggled to come to terms with what she had accomplished.
From a qualifying round exit to a US Open final in the space of 12 months, the meteoric rise of this talented teenager continues at a rapid pace.
