During the post match press conference, the German discussed the importance of social media on a tennis player's career.
Throughout the match, De Minaur faced shouts and jeers from the patriotic home crowd, whose songs and applause for Gaston helped him to victory.
The match ended with Hugo Gaston recording an unlikely victory over Alex de Minaur by a score-line of 4-6, 6-2, 6-3, 0-6, 7-6 (10-4).
The Spaniard did not let his guard down even once in the final set against Soonwoo Kwon and recorded a comfortable 6-1, 2-6, 6-2 victory.
Tsitsipas sealed the first set with the match's first break in a six-deuce game, claiming his reward for consistent return pressure throughout the set.
Alex de Minaur is one of many young players who currently stands out on the ATP tour. Here are his notable rivalries.
Alex de Minaur has won 5 titles in men’s singles competition and also won 1 doubles title. Read about the tennis racquet he uses here.
His first title win came at the Sydney International in 2019, where he beat Andreas Seppi in the final.
The girlfriend of Alex de Minaur is fellow tennis player Katie Boulter, who is ranked in the top 200 of the WTA rankings.
It was a mixed day in the Australian Open as a few notable names exited the tournament even as other seeded players marched on.