"I'm telling you, we can feel your energy," she said. "It puts us up. Whenever we have a moment whenever it's not going perfect, you guys bring us up. So thank you so much."

Serena Williams may not be playing the US Open anymore, but her presence still loomed large on Monday, with Venus Williams revealing her younger sister has been coaching from afar as she and Leylah Fe...

Serena, despite not being physically present, has been offering support and advice from afar.