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
Heatran
FireSteel
OFFENSIVE CHECK
View matchup
178.904
65.3%
Standard error 6.01 points
▾
252+ SpA Heatran Magma Storm vs. 252 HP / 252+ SpD Clefable: 139-165 (35.2 - 41.8%) -- 83.5% chance to 3HKO after Leftovers recovery
02
Serperior
Grass
DEFENSIVE CHECK
View matchup
20.566
74.6%
Standard error 9.59 points
▾
252+ SpA Clefable Moonblast vs. 252 HP / 252+ SpD Serperior: 102-121 (28.8 - 34.1%) -- 99.1% chance to 4HKO after Leftovers recovery
03
Suicune
Water
DEFENSIVE CHECK
View matchup
25.594
71.3%
Standard error 8.94 points
▾
252+ SpA Clefable Moonblast vs. 252 HP / 252+ SpD Suicune: 91-108 (22.5 - 26.7%) -- possible 5HKO
04
Tapu Lele
PsychicFairy
OFFENSIVE CHECK
View matchup
23
71.5%
Standard error 9.41 points
▾
252+ SpA Choice Specs Tapu Lele Psyshock vs. 252 HP / 0 Def Clefable in Psychic Terrain: 418-493 (106 - 125.1%) -- guaranteed OHKO
05
Magearna
SteelFairy
OFFENSIVE CHECK
View matchup
233.085
55.8%
Standard error 5.61 points
▾
252+ SpA Magearna Fleur Cannon vs. 252 HP / 252+ SpD Clefable: 180-213 (45.6 - 54%) -- 3.9% chance to 2HKO after Leftovers recovery
06
Celesteela
SteelFlying
DEFENSIVE CHECK
View matchup
34.655
63.9%
Standard error 8.16 points
▾
252+ SpA Clefable Moonblast vs. 252 HP / 252+ SpD Celesteela: 49-58 (12.3 - 14.5%)
07
Manaphy
Water
DEFENSIVE CHECK
View matchup
20.962
70.6%
Standard error 9.95 points
▾
252+ SpA Clefable Moonblast vs. 252 HP / 252+ SpD Manaphy: 100-118 (24.7 - 29.2%) -- 99.9% chance to 4HKO
08
Mawile-Mega
SteelFairy
DEFENSIVE CHECK
View matchup
20.136
70.7%
Standard error 10.14 points
▾
252+ SpA Clefable Moonblast vs. 252 HP / 252+ SpD Mawile-Mega: 51-60 (16.7 - 19.7%) -- guaranteed 6HKO
09
Swampert-Mega
WaterGround
OFFENSIVE CHECK
View matchup
83.135
59.2%
Standard error 7.61 points
▾
252+ Atk Swampert-Mega Earthquake vs. 252 HP / 0 Def Clefable: 259-306 (65.7 - 77.6%) -- guaranteed 2HKO after Leftovers recovery
10
Excadrill
GroundSteel
OFFENSIVE CHECK
View matchup
71.914
60.3%
Standard error 8.09 points
▾
252+ Atk Excadrill Iron Head vs. 252 HP / 0 Def Clefable: 384-452 (97.4 - 114.7%) -- 81.3% chance to OHKO
11
Tapu Koko
ElectricFairy
OFFENSIVE CHECK
View matchup
125.44
57.3%
Standard error 7.52 points
▾
252+ SpA Life Orb Tapu Koko Thunderbolt vs. 252 HP / 252+ SpD Clefable in Electric Terrain: 196-231 (49.7 - 58.6%) -- 71.9% chance to 2HKO after Leftovers recovery
12
Kartana
GrassSteel
OFFENSIVE CHECK
View matchup
89.687
61.3%
Standard error 8.72 points
▾
252+ Atk Kartana Smart Strike vs. 252 HP / 0 Def Clefable: 420-494 (106.5 - 125.3%) -- guaranteed OHKO
13
Gliscor
GroundFlying
SOFT CHECK
View matchup
173.195
50.6%
Standard error 6.56 points
▾
252+ Atk Gliscor Earthquake vs. 252 HP / 0 Def Clefable: 187-222 (47.4 - 56.3%) -- 30.5% chance to 2HKO after Leftovers recovery
14
Scizor-Mega
BugSteel
OFFENSIVE CHECK
View matchup
22.832
62.2%
Standard error 10.15 points
▾
252+ Atk Technician Scizor-Mega Bullet Punch vs. 252 HP / 0 Def Clefable: 312-368 (79.1 - 93.4%) -- guaranteed 2HKO after Leftovers recovery
15
Charizard-Mega-Y
FireFlying
OFFENSIVE CHECK
View matchup
21.769
62.5%
Standard error 10.37 points
▾
252+ SpA Charizard-Mega-Y Overheat vs. 252 HP / 252+ SpD Clefable in Sun: 313-370 (79.4 - 93.9%) -- guaranteed 2HKO after Leftovers recovery
16
Skarmory
SteelFlying
SOFT CHECK
View matchup
99.418
52.8%
Standard error 8.31 points
▾
252+ Atk Skarmory Iron Head vs. 252 HP / 0 Def Clefable: 270-318 (68.5 - 80.7%) -- guaranteed 2HKO after Leftovers recovery
17
Greninja
WaterDark
SOFT CHECK
View matchup
154.698
46.8%
Standard error 6.83 points
▾
252+ SpA Choice Specs Greninja Hydro Pump vs. 252 HP / 252+ SpD Clefable: 195-229 (49.4 - 58.1%) -- 64.5% chance to 2HKO after Leftovers recovery
18
Clefable
Fairy
SOFT CHECK
View matchup
104.688
45.4%
Standard error 6.71 points
▾
252+ SpA Clefable Moonblast vs. 252 HP / 252+ SpD Clefable: 106-126 (26.9 - 31.9%) -- 40.2% chance to 4HKO after Leftovers recovery
19
Toxapex
PoisonWater
SOFT CHECK
View matchup
312.368
33.7%
Standard error 4.53 points
▾
252+ SpA Toxapex Scald vs. 252 HP / 252+ SpD Clefable: 64-76 (16.2 - 19.2%) -- possible 8HKO
20
Tapu Fini
WaterFairy
SOFT CHECK
View matchup
69.691
44.7%
Standard error 8.33 points
▾
Tapu Fini Nature's Madness vs. 252 HP Clefable: 197-197 (50 - 50%) -- guaranteed 3HKO after Leftovers recovery
21
Jirachi
SteelPsychic
SOFT CHECK
View matchup
42.97
53.6%
Standard error 10.75 points
▾
252+ Atk Jirachi Iron Head vs. 252 HP / 0 Def Clefable: 312-368 (79.1 - 93.4%) -- guaranteed 2HKO after Leftovers recovery
22
Gastrodon
WaterGround
SOFT CHECK
View matchup
24.776
50.6%
Standard error 10.04 points
▾
0- Atk Gastrodon Earthquake vs. 252 HP / 0 Def Clefable: 108-127 (27.4 - 32.2%) -- 57.5% chance to 4HKO after Leftovers recovery
23
Ferrothorn
GrassSteel
SOFT CHECK
View matchup
202.462
32.6%
Standard error 5.66 points
▾
252+ Atk Ferrothorn Power Whip vs. 252 HP / 0 Def Clefable: 223-264 (56.5 - 67%) -- guaranteed 2HKO after Leftovers recovery
24
Ditto
Normal
SOFT CHECK
View matchup
81.27
44.8%
Standard error 8.79 points
▾
Ditto vs. Clefable: 0-0 (0 - 0%)
25
Kyurem-Black
DragonIce
SOFT CHECK
View matchup
24.206
50.2%
Standard error 10.16 points
▾
252+ Atk Kyurem-Black Freeze Shock vs. 252 HP / 0 Def Clefable: 399-469 (101.2 - 119%) -- guaranteed OHKO
26
Landorus-Therian
GroundFlying
SOFT CHECK
View matchup
188.202
31.4%
Standard error 5.82 points
▾
252+ Atk Landorus-Therian Explosion vs. 252 HP / 0 Def Clefable: 419-494 (106.3 - 125.3%) -- guaranteed OHKO
27
Chansey
Normal
SOFT CHECK
View matchup
106.748
40.6%
Standard error 8.18 points
▾
Chansey Seismic Toss vs. 252 HP Clefable: 100-100 (25.3 - 25.3%) -- guaranteed 5HKO after Leftovers recovery
28
Rotom-Wash
ElectricWater
SOFT CHECK
View matchup
22.693
48.3%
Standard error 10.49 points
▾
252+ SpA Rotom-Wash Hydro Pump vs. 252 HP / 252+ SpD Clefable: 132-156 (33.5 - 39.5%) -- 17.3% chance to 3HKO after Leftovers recovery
29
Medicham-Mega
FightingPsychic
SOFT CHECK
View matchup
103.097
35.3%
Standard error 7.96 points
▾
252+ Atk Pure Power Medicham-Mega Poison Jab vs. 252 HP / 0 Def Clefable: 414-488 (105 - 123.8%) -- guaranteed OHKO
30
Tornadus-Therian
Flying
SOFT CHECK
View matchup
151.208
23.2%
Standard error 5.71 points
▾
252+ SpA Tornadus-Therian Hurricane vs. 252 HP / 252+ SpD Clefable: 135-160 (34.2 - 40.6%) -- 53.5% chance to 3HKO after Leftovers recovery
Ranked #19 with 9.10% usage. Sorted by conservative score.