Rankings / William Cook / Planetary Qualifier Victoria Park

William Cook at Planetary Qualifier Victoria Park

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Planetary Premier April 19, 2026 Record 2-3-0
Rating after 1,441
-33
Rating before 1,474 RD 198
Rating after 1,441 RD 163
Effective multiplier 1.0x delta-weighted

// rating math · glicko-2 phase replay

How this rating change was computed

Glicko-2 doesn’t reward record — it rewards surprise. Winning a match the system expected you to win is worth almost nothing. Losing one is expensive. Losing to someone rated below you costs the most. The Planetary tier multiplier (1.0×) amplifies every gain and every loss. Top-cut rounds add more on top (Quarterfinals +0.15, Semifinals +0.25, Finals +0.35).

Phase Record Raw Glicko-2 Multiplier Applied Running
Swiss · 5 matches 2-3 -33.0 1.0× -33.0 1441
Total 2-3-0 -33.0 1441
Biggest upset Beat Joff S 1661 at 35% odds / surprise +0.65
Costliest loss Lost to Nairtep 1259 at 67% odds / surprise -0.67

Matches (5)

Round HRI Opponent Result Odds Game W-L Multiplier Type
R1 1500 lueyluan Win 48% 2-1 1.15x Swiss
R2 1671 mmercer71 Loss 34% 0-2 1.15x Swiss
▼ R3 1259 Nairtep Loss 67% 0-2 1.15x Swiss
R4 1469 RickWallis23 Loss 50% 1-2 1.15x Swiss
▲ R5 1661 Joff S Win 35% 2-1 1.15x Swiss

Per-match multipliers reflect what the engine applied at the time this snapshot was recorded. The Effective Multiplier above is a delta-weighted average across all phases — Finals matches swing the headline more than Swiss rounds when they produced bigger rating changes. How it works.