Fix League Scheduling System

What & Why

The league scheduling system needs fixes for all three day types (Playing, Sorting, Ranking) to ensure fair, balanced player distribution. The current configuration assumes 9 players per side (6 positions + 3 subs), but the league uses 10 per side (6 positions + 4 subs = 60 total players across 3 courts). Playing and Sorting days must randomly mix all players across all 6 court-sides with age-balanced grouping and maximum partner variety. Ranking days must group players by rank (1–20 on Court 1, 21–40 on Court 2, 41–60 on Court 3) and schedule 6 games within each court. Position balance must be improved: because volleyball rotation means starting position determines play time (position 2 rotates to bench faster than position 6), no player should repeatedly get the same starting position across games.

Done looks like

League config supports 4 subs per side (10 players per side, 60 total across 3 courts × 2 sides)
Playing Day: all 60 players randomly mixed across all courts/sides each game, age-balanced, maximum partner variety, balanced sub assignments and starting positions
Sorting Day: same algorithm as Playing Day (random mixing with age balance) — both use the same scheduling engine
Ranking Day: players 1–20 assigned to Court 1, 21–40 to Court 2, 41–60 to Court 3; each group of 20 plays 6 games on their court with balanced sides, positions, and subs
Starting position balance: across 6 games, each player gets a variety of starting positions (no one stuck in position 2 every game)
Sub balance: each player subs roughly the same number of times (no one subs more than everyone else)
Coordinator page schedule generation works correctly for all day types
Schedule display and referee console work with the updated 10-per-side format
Existing schedule validation functions updated for new config

Out of scope

Changing the scoring/ranking algorithm (Win=3, Tie=2, Loss=1 stays the same)
Changes to the leaderboard display
Any UI redesign beyond updating the schedule grid for 10 players per side
Player registration or league creation wizard changes (beyond updating defaults)

Relevant files

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Canadian Elite Volleyball Academy
elitevolleyball.training

Elite Academy

Wednesday, April 1, 2026