Venus Williams has moved into the Wimbledon third round
Legends Williams and Federer, 38 and 36 respectively, have won 14 Wimbledon titles between them.
They both ran out winners on day two - Williams beat Alexandra Dulgheru while Federer overcame Lukas Lacko - but the American appeared far from interested.
Asked what it's like to see Federer in action, Williams responded: "I don't really watch tennis.
"That's about it. I would be uneducated. I don't really watch tennis.
"I watch my match, and that's all. I'm sure he plays amazing, though."
Williams battled past qualifier Dulgheru in three sets to reach the third round for the 18th time.