Term
Doubles
A game played two against two.
A game played two against two (Section 1). Doubles is said to be the most commonly played form of pickleball (Pickleheads).
Both players on a team serve (5.B), so the score is called with three numbers (6.B.2, The score call (three numbers)).
See it in a figure
This figure is from the rule "Serving order in doubles".
How to read the sources: numbers like (8.F.4) are rulebook sections, and links are outside sources. An "Author's note" is the author's personal experience, not an official rule.