"They are such amazing humans" - Dimitrov has high praise for Venus and Serena Williams

Grigor Dimitrov has repeatedly expressed his admiration for Venus Williams and Serena Williams, and the Bulgarian revealed he is extremely grateful anytime they come to watch him play.

The Williams' sisters made the cover of fashion magazine Harper's Bazaar and Dimitrov shared the cover photo on his Instagram Story with the caption "Proud to see my besties on the cover of Harper's Bazaar US!"

On a recent appearance on Tennis Channel, the Bulgarian star was asked if he felt pressure when the sisters came to see him play.

"So much," he jokingly responded. "No, definitely not. You know, they are such amazing humans, I share such a great relationship with them and I am so thankful, I am grateful every time they come and cheer me up."

The former World No.3 admitted he has asked them for advice in the past, and shares such a great relationship with them that he even once went to Serena's house to do his laundry there.

"They are just amazing, you know, every time I get the chance to talk to them, and we share so many amazing memories," recalled Dimitrov. "I was also trying to pick a little bit of their brain in terms of the game, you know, like mental toughness and so on.

"I just think they did that incredible so, and now I think we enjoy a lot more even outside the sport. We exercise together, we do quite a bit of gym, and went to Serena's house doing my laundry there. So, it's just a lot fun and we do a lot of different things and yeah, being domestic, as well I guess."