It’s not too late for Serena Williams to get back in the swing of playing professional tennis. In fact, fans hope she will reconsider retirement after experiencing FOMO while watching big sis Venus Williams, 45, during a US Open doubles match with partner Leylah Fernandez, 22.

But a new video has fans talking about more than just the Williams sisters’ tennis skills.

After the Aug. 30 victory against Ulrikke Eikeri and Sri Hozumi 7-6 (6-1), 6-1, Venus had this to say about her younger contemporary: “Our energy really matched each other in terms of determination, in terms of not giving up, in terms of really still just focused… I never really played with a partner — outside of Serena, obviously — who had that kind of mentality, so it was really fun.”

Her little sister also noticed their d

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