Fifth seed Frances Tiafoe attends kids' day at the BB&T Atlanta Open.

Frances Tiafoe defeats Joao Sousa for the first time to advance in 's-Hertogenbosch.

Frances Tiafoe upsets 14th seed Nikoloz Basilashvili in exactly two hours to reach the second round in Madrid.

Frances Tiafoe needs three match points to oust Yoshihito Nishioka in Estoril.

Frances Tiafoe and defending champion Joao Sousa, who faced off in the 2018 final, take a helicopter ride before the 2019 Millennium Estoril Open.

American Frances Tiafoe will play Mikhail Kukushkin in the first round in Estoril and Portuguese Joao Sousa will face a qualifier.

Frances Tiafoe leads a strong #NextGenATP contingent in Barcelona that includes Stefanos Tsitsipas, Denis Shapovalov, Felix Auger-Aliassime and Nicola Kuhn.

From left to right: Frances Tiafoe, Citi Open tournament manager Mark Ein, WTEF President/CEO Rebecca Crouch, Denis Kudla, Washington D.C. Mayor Muriel Bowser, Ward 4 Councilmember Brandon Todd, tennis commentator Brett Haber, and Donald Dell, co-founder of the Citi Open, take part in a special announcement on Wednesday.

Frances Tiafoe celebrates his best run at an ATP Masters 1000 event yet.

Frances Tiafoe is having his best ATP Masters 1000 tournament so far.

Frances Tiafoe returns to the fourth round at the Miami Open presented by Itau on Monday night.

Frances Tiafoe celebrates a second-round victory over Miomir Kecmanovic in Miami.

Frances Tiafoe begins his Delray Beach Open title defence against Daniel Evans.

Frances Tiafoe (right) meets jockey Javier Castellano at the New York Open.

Frances Tiafoe meets American Ninja Warrior contestants (L-R) Noah Kaufman, Ian Dory and Joe Moravsky on Tuesday at the New York Open.

Frances Tiafoe chats with world-class jockey Javier Castellano on Tuesday at the New York Open.

Rafael Nadal pats the back of Frances Tiafoe, in his first major championship quarter-final, on Tuesday night at the Australian Open.

Frances Tiafoe celebrates his 21st birthday with a quarter-final berth at the Australian Open.

#NextGenATP American Frances Tiafoe is into the fourth round of a Grand Slam for the first time.

Frances Tiafoe strikes 56 winners past Andreas Seppi on Friday to reach the Australian Open fourth round.

Frances Tiafoe celebrates his upset win against Kevin Anderson on Wednesday at the Australian Open.

Alexei Popyrin and Frances Tiafoe sample Aussie 'Bush Tucker' ahead of the Sydney International.

Frances Tiafoe saves six of seven break points he faces to defeat Hubert Hurkacz on Tuesday.

Taylor Fritz and Frances Tiafoe, who are in different groups at the Next Gen ATP Finals, practised together ahead of the start of competition.

Taylor Fritz and Frances Tiafoe, both inside the Top 50 of the ATP Rankings, will compete at the 2018 Next Gen ATP Finals.