Refers to a match or format with two players per side, used in tennis, badminton, table tennis, and similar sports. Contrasts with シングルス (singles).
See also: シングルス
I paired up with Tanaka to play doubles in the tournament.
I have a doubles match tomorrow.
He is good at doubles.
This time I decided to play in the doubles event.
They won the championship in doubles.
Borrowed from English 'doubles'.