Padel Mexicano for 40 players

All 40 players play once in each complete round. Round 1 is random; the draw below is one example. From round 2, the standings form groups of four: 1st & 3rd v 2nd & 4th, then 5th & 7th v 6th & 8th, and so on. Partners and opponents can repeat.

8 players can play at once on 2 courts. On 2 courts, play the matches listed for courts 1–2 first, then 3–4, then 5–6, then 7–8, then 9–10. The other players wait between matches. With 10 courts, everyone could play at once in about 12 minutes. Finish the whole round before drawing the next one. Choose how many rounds to play; there is no fixed full schedule.