What is it called when you win 6 to 0 in tennis?

Winning 6-0 in tennis is known as a "double bagel". This is a term used to describe a match where one player has won all six games without the opponent scoring a single point. A "bagel" is a slang term for scoring zero points, and the "double bagel" indicates that one player has won all six games without their opponent scoring a point in any of them. This is a rare result in tennis and indicates a total domination of the game by one player.