Frances Tiafoe is the jokester in team USA and the American created another highlight by asking
Madison Keys for an autograph after her win at the United Cup.
Tiafoe will play his first United Cup match tomorrow as he watched Fritz and Keys play today. He was particularly impressed by Keys and how she was able to come back from a break down in each set and win it in two. He asked her for an autograph after the match and Keys went along with the joke.
She shared the photo of herself signing something for Tiafoe with the caption:
"Anything for my fans."