(REUTERS) - American wild card Frances Tiafoe earned a breakthrough 6-1, 6-4 win over Germany's Peter Gojowczyk at tennis' Delray Beach Open in Florida on Sunday (Feb 25) to collect his maiden ATP title.
Tiafoe, 20, becomes the youngest American to win an ATP World Tour title since Andy Roddick triumphed at Houston in 2002 as a 19-year-old.
"I just can't believe it. A lot's going through my mind," said world No. 91 Tiafoe.
"If you would have asked me 10 years ago if I was going to win a title at 20 years old, I probably would have laughed. It's unbelievable."
Tiafoe, appearing in his first career tour-level final, charged through the opening set in 25 minutes and held steady in the second before wrapping up the match with a second-serve ace on match point.
The victory capped a remarkable two-week run for Tiafoe, who reached the quarter-finals in New York the previous week and beat world No. 10 Juan Martin del Potro in the second round at Delray Beach.