JAPR is a living rating — computed from every game you play across every Junkies event, not a one-time score. Everyone starts at 3.50 and earns their number from results. The core rule: wins are yours, losses are the team's.

• Wins are yours. When you win, you're paid against your own rating vs the opposing pair — upsetting a stronger team as the lower-rated partner pays full underdog rates. Carrying (or being carried by) a strong partner no longer shrinks your payout.
• Losses are the team's. A loss is priced off the pair's average — the scoresheet can't see who got iced out, so nobody eats a loss alone.
• The winner's wage. Every win pays at least a 10% minimum, no matter how heavy a favorite you are — keep winning and you keep climbing. The road to 5.0 is open.
• Blowouts matter. An 11–2 beatdown moves ratings about 2× as much as an 11–9 squeaker. Bracket playoffs count 1.5×, pool play 1.0×, Versus-day mixers 0.5×.
• Prove-It trust meter. Every rating carries a ± band: it shrinks as you play and fogs up when you skip event days. While your ± is wide, your wins and losses count up to 3× — so new and returning players find their real level in one night. Badges: ⏳ Unproven = under 10 career games · 🕸️ Rusty = missed 3+ event days. Your number never drops while you're away — but your first night back moves extra fast. (Applies to games from Nov 8, 2026 onward — no old games were re-scored by it.)

Winners are graded individually; losers share the team's Δ. Log a new event and the full ladder recomputes from history. Ratings tighten around 3.50 early and spread out as more games are logged.