Observed target KO or switch rate is upstream p: the fraction of relevant encounters where the target was knocked out or switched out. Standard error is upstream d. The conservative score is p − 4d. These ladder observations do not prove a set-specific counter.
How to read this table
Use encounter count and standard error to judge the sample. Damage estimates below use inferred sets and remain separate from the observed ladder metric.
#
Checker
Encounters
Conservative score
Target KO or switch rate
01
Tapu Fini
WaterFairy
DEFENSIVE CHECK
View matchup
89.279
76.4%
Standard error 6.29 points
▾
252+ Atk Zamazenta Heavy Slam (120 BP) vs. 252 HP / 252+ Def Tapu Fini: 89-105 (25.8 - 30.5%) -- 1.5% chance to 4HKO after Leftovers recovery
02
Venusaur-Mega
GrassPoison
DEFENSIVE CHECK
View matchup
201.07
68.4%
Standard error 5.48 points
▾
252+ Atk Zamazenta Stone Edge vs. 252 HP / 252+ Def Venusaur-Mega: 71-84 (19.5 - 23%) -- possible 5HKO
03
Tapu Lele
PsychicFairy
OFFENSIVE CHECK
View matchup
349.214
57.2%
Standard error 4.51 points
▾
252+ SpA Tapu Lele Future Sight vs. 252 HP / 252+ SpD Zamazenta in Psychic Terrain: 368-434 (94.8 - 111.8%) -- 68.8% chance to OHKO
04
Iron Valiant
FairyFighting
OFFENSIVE CHECK
View matchup
339.992
57.2%
Standard error 4.57 points
▾
252+ Atk Iron Valiant Spirit Break vs. +1 252 HP / 0 Def Zamazenta: 162-192 (41.7 - 49.4%) -- guaranteed 3HKO after Leftovers recovery
05
Dragonite
DragonFlying
SOFT CHECK
View matchup
416.528
51.8%
Standard error 4.17 points
▾
252+ Atk Dragonite Fly vs. +1 252 HP / 0 Def Zamazenta: 198-234 (51 - 60.3%) -- 85.2% chance to 2HKO after Leftovers recovery
06
Toxapex
PoisonWater
SOFT CHECK
View matchup
339.248
52.7%
Standard error 4.59 points
▾
252+ SpA Toxapex Sludge Bomb vs. 252 HP / 252+ SpD Zamazenta: 61-73 (15.7 - 18.8%) -- possible 8HKO
07
Iron Crown
SteelPsychic
OFFENSIVE CHECK
View matchup
28.115
69.1%
Standard error 8.71 points
▾
252+ SpA Iron Crown Psychic Noise vs. 252 HP / 252+ SpD Zamazenta: 168-200 (43.2 - 51.5%) -- 7.4% chance to 2HKO
08
Hatterene
PsychicFairy
OFFENSIVE CHECK
View matchup
251.263
55.0%
Standard error 5.33 points
▾
252+ SpA Hatterene Psychic Noise vs. 252 HP / 252+ SpD Zamazenta: 186-218 (47.9 - 56.1%) -- 80.9% chance to 2HKO
09
Gholdengo
SteelGhost
SOFT CHECK
View matchup
656.58
45.5%
Standard error 3.27 points
▾
252+ SpA Gholdengo Make It Rain vs. 252 HP / 252+ SpD Zamazenta: 144-169 (37.1 - 43.5%) -- 99.7% chance to 3HKO after Leftovers recovery
10
Zamazenta
Fighting
SOFT CHECK
View matchup
686.186
44.8%
Standard error 3.19 points
▾
252+ Atk Zamazenta Close Combat vs. +1 252 HP / 0 Def Zamazenta: 120-142 (30.9 - 36.5%) -- guaranteed 4HKO after Leftovers recovery
11
Pinsir-Mega
BugFlying
OFFENSIVE CHECK
View matchup
52.636
67.3%
Standard error 9.13 points
▾
252+ Atk Aerilate Pinsir-Mega Double-Edge vs. +1 252 HP / 0 Def Zamazenta: 350-414 (90.2 - 106.7%) -- 37.5% chance to OHKO
12
Keldeo
WaterFighting
OFFENSIVE CHECK
View matchup
184.91
55.6%
Standard error 6.30 points
▾
252+ SpA Keldeo Hydro Pump vs. 252 HP / 252+ SpD Zamazenta: 129-153 (33.2 - 39.4%) -- 11.9% chance to 3HKO after Leftovers recovery
13
Clefable
Fairy
SOFT CHECK
View matchup
141.873
52.4%
Standard error 5.92 points
▾
252+ SpA Clefable Moonblast vs. 252 HP / 252+ SpD Zamazenta: 182-216 (46.9 - 55.6%) -- 15.2% chance to 2HKO after Leftovers recovery
14
Necrozma
Psychic
OFFENSIVE CHECK
29.371
61.0%
Standard error 9.00 points
15
Raging Bolt
ElectricDragon
SOFT CHECK
View matchup
334.372
42.9%
Standard error 4.65 points
▾
252+ SpA Choice Specs Raging Bolt Draco Meteor vs. 252 HP / 252+ SpD Zamazenta: 238-282 (61.3 - 72.6%) -- guaranteed 2HKO after Leftovers recovery
16
Volcarona
BugFire
SOFT CHECK
View matchup
250.188
43.0%
Standard error 5.17 points
▾
252+ SpA Volcarona Psychic vs. 252 HP / 252+ SpD Zamazenta: 146-172 (37.6 - 44.3%) -- guaranteed 3HKO after Leftovers recovery
17
Kommo-o
DragonFighting
DEFENSIVE CHECK
View matchup
63.224
56.8%
Standard error 8.66 points
▾
252+ Atk Zamazenta Close Combat vs. 252 HP / 252+ Def Kommo-o: 126-148 (35.5 - 41.8%) -- guaranteed 3HKO
18
Corviknight
FlyingSteel
SOFT CHECK
View matchup
311.027
41.1%
Standard error 4.72 points
▾
252+ Atk Corviknight Brave Bird vs. +1 252 HP / 0 Def Zamazenta: 194-230 (50 - 59.2%) -- 77% chance to 2HKO after Leftovers recovery
19
Pecharunt
PoisonGhost
SOFT CHECK
View matchup
279.124
42.0%
Standard error 4.97 points
▾
252+ SpA Pecharunt Malignant Chain vs. 252 HP / 252+ SpD Zamazenta: 91-108 (23.4 - 27.8%) -- possible 5HKO
20
Gardevoir-Mega
PsychicFairy
OFFENSIVE CHECK
View matchup
20.446
64.3%
Standard error 10.60 points
▾
252+ SpA Pixilate Gardevoir-Mega Hyper Voice vs. 252 HP / 252+ SpD Zamazenta: 306-360 (78.8 - 92.7%) -- guaranteed 2HKO after Leftovers recovery
21
Great Tusk
GroundFighting
SOFT CHECK
View matchup
429.041
36.5%
Standard error 3.89 points
▾
252+ Atk Great Tusk Headlong Rush vs. +1 252 HP / 0 Def Zamazenta: 129-153 (33.2 - 39.4%) -- 11.9% chance to 3HKO after Leftovers recovery
22
Dondozo
Water
SOFT CHECK
View matchup
34.442
54.8%
Standard error 8.48 points
▾
252+ Atk Unaware Dondozo Wave Crash vs. 252 HP / 0 Def Zamazenta: 160-189 (41.2 - 48.7%) -- guaranteed 3HKO after Leftovers recovery
23
Scizor-Mega
BugSteel
SOFT CHECK
View matchup
229.46
42.7%
Standard error 5.50 points
▾
252+ Atk Scizor-Mega Close Combat vs. +1 252 HP / 0 Def Zamazenta: 95-112 (24.4 - 28.8%) -- possible 5HKO
24
Zapdos
ElectricFlying
SOFT CHECK
View matchup
491.197
33.9%
Standard error 3.61 points
▾
252+ SpA Zapdos Hurricane vs. 252 HP / 252+ SpD Zamazenta: 254-300 (65.4 - 77.3%) -- guaranteed 2HKO after Leftovers recovery
25
Iron Moth
FirePoison
SOFT CHECK
View matchup
40.965
50.4%
Standard error 7.81 points
▾
252+ SpA Iron Moth Psychic vs. 252 HP / 252+ SpD Zamazenta: 150-178 (38.6 - 45.8%) -- guaranteed 3HKO after Leftovers recovery
26
Clodsire
PoisonGround
SOFT CHECK
View matchup
75.606
41.8%
Standard error 5.67 points
▾
252+ Atk Unaware Clodsire Earthquake vs. 252 HP / 0 Def Zamazenta: 111-132 (28.6 - 34%) -- 98% chance to 4HKO after Leftovers recovery
27
Cresselia
Psychic
SOFT CHECK
View matchup
70.402
51.3%
Standard error 8.31 points
▾
252+ SpA Cresselia Moonblast vs. 252 HP / 252+ SpD Zamazenta: 104-124 (26.8 - 31.9%) -- 37.1% chance to 4HKO after Leftovers recovery
28
Gliscor
GroundFlying
SOFT CHECK
View matchup
425.521
31.9%
Standard error 3.83 points
▾
252+ Atk Gliscor Earthquake vs. +1 252 HP / 0 Def Zamazenta: 85-102 (21.9 - 26.2%) -- possible 5HKO
29
Urshifu-Rapid-Strike
FightingWater
SOFT CHECK
View matchup
259.824
36.8%
Standard error 5.07 points
▾
252+ Atk Urshifu-Rapid-Strike Surging Strikes (3 hits) vs. 252 HP / 0 Def Zamazenta on a critical hit: 183-219 (47.1 - 56.4%) -- 18.1% chance to 2HKO after Leftovers recovery
30
Ceruledge
FireGhost
SOFT CHECK
View matchup
151.684
42.9%
Standard error 6.87 points
▾
252+ Atk Ceruledge Poltergeist vs. +1 252 HP / 0 Def Zamazenta: 114-135 (29.3 - 34.7%) -- 99.9% chance to 4HKO after Leftovers recovery
Ranked #2 with 20.57% usage. Sorted by conservative score.