In tennis what’s a bagel?
In tennis, the word “bagel” is used to refer to when someone loses a set 6-0, and does not win any games at all in a set. So, if someone loses a set 6-0, then he or she is “bagelled”.
Here’s an example of the usage of “bagel” in tennis:
Using “bagel” In a Sentence For Tennis
"Yesterday Rafael Nadal beat Andy Roddick 6-0, 6-0. He double bagelled Roddick, who did not win any games in 2 sets!"
Why the word bagel?
The reason the word bagel is used to refer to someone who lost a set without winning any games is simply because a bagel resembles the number “0”.