Serena Williams denied knowing who umpire Carlos Ramos is after her first round victory over Maria Sharapova at the US Open on Monday.
Ramos infamously issued three code warnings against Williams during the 2018 US Open final against Naomi Osaka, causing Williams to say to Ramos: "You will never, ever, ever be on another court of mine as long as you live ... You owe me an apology. Say it. Say you’re sorry . . . How dare you insinuate that I was cheating. You stole a point from me. You're a thief, too."
Ramos has so far been kept away from matches with either Williams sister involved, and when asked about that decision, Serena bluntly responded: "I don't know who that is."