Frances Tiafoe calls tennis 'the hardest sport in the world": "There's no clock and it's just you"

America’s Frances Tiafoe believes that tennis remains the most difficult sport in the world. The 26-year-old is set to take part in the Mexican Open where he will play his first match on Tuesday against Australia’s Max Purcell.

Tiafoe recently appeared in a video on the social media platform Instagram where he stated that tennis remains the most difficult sport in the world as there is no time limit.

"It's the hardest sport in the world,” he said. “I still think it's the hardest sport in the world. Well A, the ball in comparison to other sports is very small. Your hand-eye [coordination] has to got to be very good.

"Then there's no clock. You know, it's not a timed sport. When those guys come to watch me, they're like, 'How long is a tennis match?' I'm like: 'Sh*t I don’t know, you never know. And then you know it's the uncontrollable movements, up and down, side to side. So it's tough and it's just you.”

The current world number 16 will be hoping to continue his good recent form. In his most recent outing in Florida at the Delray Beach Open, the Maryland-born was eventually knocked out after losing in the semifinal to fellow American Tommy Paul in straight sets with a score of 6-2, 6-2.