FOUR

Number of players in a doubles game (4)

Solution has appeared in 3 crosswords (3 across and 0 down):

• Quick crossword No 16,257 — 2022-06-14 23:00:14
  19A: Fab number? (4)
• Quick crossword No 16,069 — 2021-11-06 00:00:17
  19A: Beatles' number? (4)
• Quick crossword No 15,518 — 2020-02-01 00:00:03
  8A: Number of players in a doubles game (4)