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
Ogerpon-Wellspring
GrassWater
OFFENSIVE CHECK
View matchup
83.95
84.5%
Standard error 3.95 points
▾
252+ Atk Wellspring Mask Ogerpon-Wellspring Ivy Cudgel vs. 252 HP / 0 Def Iron Treads: 348-410 (90.6 - 106.7%) -- 43.8% chance to OHKO
02
Great Tusk
GroundFighting
DEFENSIVE CHECK
View matchup
116.394
77.3%
Standard error 3.88 points
▾
0- SpA Iron Treads Steel Beam vs. 252 HP / 0 SpD Great Tusk: 172-204 (39.6 - 47%) -- guaranteed 3HKO
03
Corviknight
FlyingSteel
DEFENSIVE CHECK
View matchup
96.25
70.2%
Standard error 4.66 points
▾
252+ Atk Iron Treads Supercell Slam vs. 252 HP / 252+ Def Corviknight: 150-178 (37.5 - 44.5%) -- guaranteed 3HKO
04
Zamazenta
Fighting
OFFENSIVE CHECK
View matchup
66.14
69.8%
Standard error 5.65 points
▾
252+ Atk Zamazenta Close Combat vs. 252 HP / 0 Def Iron Treads: 348-410 (90.6 - 106.7%) -- 43.8% chance to OHKO
05
Moltres
FireFlying
OFFENSIVE CHECK
View matchup
32.043
71.8%
Standard error 7.95 points
▾
252+ SpA Moltres Overheat vs. 252 HP / 252+ SpD Iron Treads: 408-482 (106.2 - 125.5%) -- guaranteed OHKO
06
Gliscor
GroundFlying
DEFENSIVE CHECK
View matchup
127.558
56.1%
Standard error 4.39 points
▾
252+ Atk Iron Treads Ice Spinner vs. 252 HP / 252+ Def Gliscor: 216-256 (61 - 72.3%) -- guaranteed 2HKO
07
Ting-Lu
DarkGround
DEFENSIVE CHECK
View matchup
44.245
64.2%
Standard error 7.21 points
▾
252+ Atk Iron Treads Ice Spinner vs. 252 HP / 252+ Def Ting-Lu: 108-128 (21 - 24.9%) -- possible 6HKO
08
Samurott-Hisui
WaterDark
OFFENSIVE CHECK
View matchup
56.896
60.9%
Standard error 6.47 points
▾
252+ Atk Sharpness Samurott-Hisui Razor Shell vs. 252 HP / 0 Def Iron Treads: 302-356 (78.6 - 92.7%) -- guaranteed 2HKO
09
Kyurem
DragonIce
OFFENSIVE CHECK
View matchup
60.138
60.1%
Standard error 6.31 points
▾
252+ SpA Kyurem Earth Power vs. 252 HP / 252+ SpD Iron Treads: 194-230 (50.5 - 59.8%) -- guaranteed 2HKO
10
Kingambit
DarkSteel
DEFENSIVE CHECK
View matchup
55.093
60.9%
Standard error 6.57 points
▾
252+ Atk Iron Treads Earthquake vs. 252 HP / 252+ Def Kingambit: 206-246 (50.9 - 60.8%) -- 89.5% chance to 2HKO after Leftovers recovery
11
Cresselia
Psychic
DEFENSIVE CHECK
View matchup
25.793
67.1%
Standard error 9.25 points
▾
252+ Atk Iron Treads Knock Off (97.5 BP) vs. 252 HP / 252+ Def Cresselia: 142-168 (31.9 - 37.8%) -- 93.3% chance to 3HKO
12
Iron Valiant
FairyFighting
OFFENSIVE CHECK
View matchup
20.116
69.2%
Standard error 10.29 points
▾
0- Atk Iron Valiant Close Combat vs. 252 HP / 0 Def Iron Treads: 252-296 (65.6 - 77%) -- guaranteed 2HKO
13
Dragonite
DragonFlying
OFFENSIVE CHECK
View matchup
24.857
60.6%
Standard error 9.80 points
▾
252+ Atk Dragonite Earthquake vs. 252 HP / 0 Def Iron Treads: 210-248 (54.6 - 64.5%) -- guaranteed 2HKO
14
Gholdengo
SteelGhost
SOFT CHECK
View matchup
117.47
36.8%
Standard error 4.45 points
▾
252+ SpA Gholdengo Focus Blast vs. 252 HP / 252+ SpD Iron Treads: 264-312 (68.7 - 81.2%) -- guaranteed 2HKO
15
Landorus-Therian
GroundFlying
SOFT CHECK
View matchup
33.537
42.7%
Standard error 8.54 points
▾
252+ Atk Landorus-Therian Earthquake vs. 252 HP / 0 Def Iron Treads: 332-392 (86.4 - 102%) -- 18.8% chance to OHKO
16
Raging Bolt
ElectricDragon
SOFT CHECK
View matchup
69.14
25.6%
Standard error 5.25 points
▾
252+ SpA Raging Bolt Draco Meteor vs. 252 HP / 252+ SpD Iron Treads: 109-129 (28.3 - 33.5%) -- 0.2% chance to 3HKO
17
Glimmora
RockPoison
SOFT CHECK
View matchup
72.608
22.9%
Standard error 4.93 points
▾
252+ SpA Glimmora Earth Power vs. 252 HP / 252+ SpD Iron Treads: 194-230 (50.5 - 59.8%) -- guaranteed 2HKO
18
Pecharunt
PoisonGhost
SOFT CHECK
View matchup
45.781
29.9%
Standard error 6.77 points
▾
252+ SpA Pecharunt Shadow Ball vs. 252 HP / 252+ SpD Iron Treads: 100-118 (26 - 30.7%) -- guaranteed 4HKO
19
Slowking-Galar
PoisonPsychic
SOFT CHECK
View matchup
63.821
8.1%
Standard error 3.42 points
▾
252+ SpA Slowking-Galar Flamethrower vs. 252 HP / 252+ SpD Iron Treads: 172-204 (44.7 - 53.1%) -- 26.6% chance to 2HKO
20
Toxapex
PoisonWater
SOFT CHECK
View matchup
66.689
6.5%
Standard error 3.03 points
▾
252+ SpA Toxapex Surf vs. 252 HP / 252+ SpD Iron Treads: 168-198 (43.7 - 51.5%) -- 8.6% chance to 2HKO
21
Clodsire
PoisonGround
SOFT CHECK
View matchup
21.115
1.5%
Standard error 2.64 points
▾
252+ Atk Clodsire Earthquake vs. 252 HP / 0 Def Iron Treads: 216-254 (56.2 - 66.1%) -- guaranteed 2HKO
22
Alomomola
Water
SOFT CHECK
View matchup
22.373
28.7%
Standard error 9.57 points
▾
252+ Atk Alomomola Flip Turn vs. 252 HP / 0 Def Iron Treads: 128-152 (33.3 - 39.5%) -- guaranteed 3HKO
23
Clefable
Fairy
SOFT CHECK
View matchup
23.687
23.2%
Standard error 8.67 points
▾
252+ SpA Clefable Moonblast vs. 252 HP / 252+ SpD Iron Treads: 62-73 (16.1 - 19%) -- possible 6HKO
Ranked #19 with 10.86% usage. Sorted by conservative score.