The kangaroo is Australia's national animal and the star has already revealed his plans.
"I already know it's going to be a kangaroo. I just don't know where. I'm thinking about the leg but I don't know which leg, whether it's going to be the right or the left," says Alcaraz.
It would be a lasting memory of his victory over Novak Djokovic in the men's final of the Australian Open on Sunday, which made him the youngest male player – at age 22 – to win all four Grand Slam tournaments.
Alcaraz won the final 3–1 in sets.
Kazakhstan's Yelena Rybakina won the women's final.
