Piotr Grabiec at Planetary Qualifier Warsaw

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Planetary Premier April 19, 2026 Record 2-4-0 Field 63

Rating after 1,682

-41

Rating before 1,722 RD 103

Rating after 1,682 RD 97

Effective multiplier 1.0×

Performance 1,400

Field strength Mean 1,594 · Median 1,544 · 63 rated

// 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.

Shape D top-cut adjustments QF SF F Wins +0.12 +0.18 +0.25 Losses -0.18 -0.27 -0.35

Making cut at this Planetary event adds a flat +15 top-cut bonus on top of phase math. Making cut never costs you net rating — the made-cut floor pins the tournament delta to ≥ 0.

Start 1722 → Swiss 1682 -40.7

Top Cut Bracket Full bracket on the event page

Quarterfinals

Beton 0

Gibki 2

Jędrzej Sobota 2

DrakonianLord 1

Harrison_Solo 0

Piotr Jabłoński 2

siny 0

Cuendae 2

Semifinals

Gibki 2

Jędrzej Sobota 0

Piotr Jabłoński 2

Cuendae 0

Finals

Gibki 2

Piotr Jabłoński 0

See full bracket on the event page →

Swiss · 6 matches 2-4 -40.7 1.0× +0.0 -40.7 1682

Total 2-4-0 -40.7 1682

Toughest win Beat SlaaN 1372 at 77% odds

Costliest loss Lost to kosoluk 1480 at 69% odds / surprise -0.69 /

Matches (6)

R1 SlaaN Win 2-0 1.0× +8.4 Swiss

R2 Cuendae Loss 0-2 1.0× Swiss

R3 Kondziuldz Win 2-1 1.0× +8.3 Swiss

R4 Yann Cauet Loss 1-2 1.0× Swiss

Glicko-2 predicted 54% odds in your favor. Unexpected losses carry the most rating signal — the system learns more from one upset than from many predictable wins. Their rating wasn't well-established (RD 134, true skill could span ±268).

R5 kosoluk Loss 0-2 1.0× Swiss

Glicko-2 predicted 69% odds in your favor. Unexpected losses carry the most rating signal — the system learns more from one upset than from many predictable wins. Their rating wasn't well-established (RD 173, true skill could span ±347).

R6 Mikołaj Wendowski Loss 0-2 1.0× Swiss