Last year, Fearnley was classified outside the best 500 in the world and still studied at the Christian University of Texas in the United States.
After a dazzling increase since his professional return in June, he should reach a new career summit after having moved to the second round of Miami.
Fearnley could enter the Top 70 if it went further at the Masters tournament – the level of ATP events under the four Grand Slam – although the German head Alexander Zverev is waiting on Friday.
This is a revenge match of their Australian meeting of the fourth open round, including the Triple Finalist of the Grand Chelem Zverev won 6-3 6-4 6-4 On the way to the Melbourne final.
The physical and mental tenacity that Fearnley showed to beat Bonzi was impressive.
Fearnley needed a medical waiting period before the decisive ensemble, putting on the ground for treatment in the left hip area.
Although he lost the service in the opening match, the Briton recovered the break instantly by returning more aggressive and going for his shots has borne fruit.
“It was extremely difficult, I felt that my left leg contracted a little but I had to dig deeply,” Fearnley told Sky Sports.
“I didn’t want any part of a rally, so I was missing or that I was hitting a winner. I had to go.”