Canada's Felix Auger-Aliassime says the quality he produced to stun German third seed Alexander Zverev in the US Open fourth round did not simply "fall out of the sky".
Auger-Aliassime's bold attacking approach paid off as he fought back to win 4-6 7-6 (9-7) 6-4 6-4 in New York.
The powerful 25-year-old had not previously beaten a top-five ranked opponent in seven attempts at a major tournament.
But his game - booming serve, vicious groundstrokes and supreme athleticism - knitted together to end Zverev's latest bid for an elusive Grand Slam title.
"In practice I felt like I was doing things really well.