Grandstand court.

The 25 year old Tiafoe has never faced the 24 year old Watanuki before. Currently ranked 14th, Tiafoe could rise to number six in the rankings with a title victory in Miami.

Tiafoe turned pro in 2015 and posted his best grand slam result last year in his semifinal finish at the US Open.

Oftentimes a crowd favorite due to his outgoing personality and explosive game, Tiafoe is an aggressive baseliner known for his powerful serve and forehand.

The 19 year old Gauff leads the 21 year old Potapova head to head 2-0 after winning both of the duo's prior matches on hard courts. Currently ranked sixth, Gauff could rise in the rankings to number four with a title victory in Miami.

Gauff turned pro in 2018 and posted her best grand slam result last year in her runner up finish at the Roland Garros.

Gauff, a tennis prodigy, was ranked number one as a junior tennis player.

She first made headlines as a 15 year old professional tennis player after defeating the five time champion and American Venus Williams at Wimbledon in 2019.

An aggressive baseliner, Gauff possesses a powerful backhand.

However her forehand has been often criticized as it can be error prone.

It has been suggested that Gauff take a few months off from the professional tennis tour to rebuild her forehand.