A tournament forgives scheduling sins — everyone is in the building, and a delay just compresses the afternoon. A league does not. Its fixtures stretch across weeks of real life: holidays, injuries, rain, work trips. The fixture list you publish in week one decides whether your season ends on time with every match played, or limps into the dark with a backlog nobody wants to clear.
A single round robin of n teams needs n − 1 rounds (one fewer if you have an odd team count, plus a bye each round). Eight teams: seven rounds. Play everyone twice and it doubles. Map that against your real calendar — term dates, holidays, venue availability — before you promise a start and end date. A ten-round season squeezed into eleven available weeks has no slack, and seasons without slack always need it.
The single most valuable thing a league schedule can contain is empty space. One free week every four or five rounds absorbs postponements without pushing the season's end date. If nothing needs catching up, it becomes a rest week — nobody has ever complained about one of those.
Publish, before round one: how far in advance a postponement can be requested, who must agree, the deadline by which the match must be replayed, and what happens if it is not (points shared, or awarded against the postponing side). A league with clear postponement rules self-administers; one without them turns its organizer into a small-claims judge.
Generating a balanced round robin by hand is solved mathematics, and software should do it. ScorePal's league software generates the full season's fixtures in one pass — rounds, courts and dates — then keeps a live table, records results from players' own phones, and reschedules cleanly when real life interferes. Publish once, and run the season instead of the spreadsheet.