His playing style could generally be described as aggressive, and his level tends to fluctuate over the course of a match.
Duckworth is is also a leading infrastructure and procurement attorney in his country and specializes in procurement of major infrastructure projects.
The final scoreline read 2-6, 6-7, 6-4, 6-4, 7-5 on Rod Laver Arena, as the Spaniard became the first man to win 21 Grand Slam singles titles.
His second Grand Slam trophy in Melbourne turns out to be the one that helps him to leapfrog two of his main competitors – Roger Federer and Novak Djokovic.
On Sunday, Rafael Nadal beat Daniil Medvedev in a five-set thriller 2-6, 6-7, 6-4, 6-4, 7-5 to win Grand Slam number 21.
No.1 seeds Barbora Krejcikova and Katerina Siniakova have clinched their fourth Grand Slam women's doubles title as a team.
A win over Medvedev will give Nadal a record-breaking 21st Grand Slam title. It will help him overtake two of his main competitors - Roger Federer and Novak Djokovic.
The reward for his last-four win on Friday is a mouth-watering summit clash against Rafael Nadal in Melbourne.
The victory is Kristina Mladenovic's first mixed major crown in eight years, her third overall and second in Australia.
On Thursday, the unseeded finalists upset the third and second seeds, respectively, in the Australian Open.