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
Celesteela
SteelFlying
DEFENSIVE CHECK
View matchup
23.86
76.5%
Standard error 8.68 points
▾
252+ SpA Clefable Fire Blast vs. 252 HP / 252+ SpD Celesteela: 152-180 (38.1 - 45.2%) -- guaranteed 3HKO after Leftovers recovery
02
Swampert-Mega
WaterGround
OFFENSIVE CHECK
View matchup
64.12
65.5%
Standard error 5.94 points
▾
252+ Atk Swampert-Mega Earthquake vs. 252 HP / 0 Def Clefable: 259-306 (65.7 - 77.6%) -- guaranteed 2HKO after Leftovers recovery
03
Magearna
SteelFairy
SOFT CHECK
View matchup
217.94
54.4%
Standard error 3.37 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
04
Heatran
FireSteel
SOFT CHECK
View matchup
172.432
54.4%
Standard error 3.79 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
05
Tapu Koko
ElectricFairy
SOFT CHECK
View matchup
153.895
53.2%
Standard error 4.02 points
▾
Tapu Koko Nature's Madness vs. 252 HP Clefable: 197-197 (50 - 50%) -- guaranteed 3HKO after Leftovers recovery
06
Kartana
GrassSteel
OFFENSIVE CHECK
View matchup
83.251
58.5%
Standard error 5.40 points
▾
252+ Atk Kartana Smart Strike vs. 252 HP / 0 Def Clefable: 420-494 (106.5 - 125.3%) -- guaranteed OHKO
07
Chansey
Normal
SOFT CHECK
View matchup
152.673
52.2%
Standard error 4.04 points
▾
Chansey Seismic Toss vs. 252 HP Clefable: 100-100 (25.3 - 25.3%) -- guaranteed 5HKO after Leftovers recovery
08
Jirachi
SteelPsychic
DEFENSIVE CHECK
View matchup
48.489
63.3%
Standard error 6.92 points
▾
252+ SpA Clefable Fire Blast vs. 252 HP / 252+ SpD Jirachi: 154-182 (38.1 - 45%) -- guaranteed 3HKO after Leftovers recovery
09
Suicune
Water
DEFENSIVE CHECK
View matchup
25.594
71.3%
Standard error 8.94 points
▾
252+ SpA Clefable Thunderbolt vs. 252 HP / 252+ SpD Suicune: 114-136 (28.2 - 33.6%) -- 94.1% chance to 4HKO after Leftovers recovery
10
Excadrill
GroundSteel
OFFENSIVE CHECK
View matchup
62.36
59.9%
Standard error 6.21 points
▾
252+ Atk Excadrill Iron Head vs. 252 HP / 0 Def Clefable: 384-452 (97.4 - 114.7%) -- 81.3% chance to OHKO
11
Gliscor
GroundFlying
SOFT CHECK
View matchup
138.167
51.3%
Standard error 4.25 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
12
Mawile-Mega
SteelFairy
DEFENSIVE CHECK
View matchup
20.136
70.7%
Standard error 10.14 points
▾
252+ SpA Clefable Fire Blast vs. 252 HP / 252+ SpD Mawile-Mega: 158-188 (51.9 - 61.8%) -- guaranteed 2HKO
13
Skarmory
SteelFlying
SOFT CHECK
View matchup
59.642
54.9%
Standard error 6.44 points
▾
252+ Atk Skarmory Brave Bird vs. 252 HP / 0 Def Clefable: 202-238 (51.2 - 60.4%) -- 91.4% chance to 2HKO after Leftovers recovery
14
Greninja
WaterDark
SOFT CHECK
View matchup
165.021
44.3%
Standard error 3.87 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
15
Gastrodon
WaterGround
SOFT CHECK
View matchup
64.431
52.7%
Standard error 6.22 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
16
Landorus-Therian
GroundFlying
SOFT CHECK
View matchup
216.797
39.4%
Standard error 3.32 points
▾
252+ Atk Landorus-Therian Explosion vs. 252 HP / 0 Def Clefable: 419-494 (106.3 - 125.3%) -- guaranteed OHKO
17
Clefable
Fairy
SOFT CHECK
View matchup
115.218
43.2%
Standard error 4.61 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
18
Ditto
Normal
DEFENSIVE CHECK
View matchup
38.056
56.5%
Standard error 8.04 points
▾
252+ SpA Clefable Moonblast vs. 252 HP / 252+ SpD Ditto: 153-180 (51 - 60%) -- guaranteed 2HKO
19
Charizard-Mega-Y
FireFlying
OFFENSIVE CHECK
View matchup
21.769
62.5%
Standard error 10.37 points
▾
252+ SpA Charizard-Mega-Y Fire Blast vs. 252 HP / 252+ SpD Clefable in Sun: 267-315 (67.7 - 79.9%) -- guaranteed 2HKO after Leftovers recovery
20
Cresselia
Psychic
SOFT CHECK
View matchup
40.496
52.1%
Standard error 7.85 points
▾
252+ SpA Cresselia Psyshock vs. 252 HP / 0 Def Clefable: 129-153 (32.7 - 38.8%) -- 4.7% chance to 3HKO after Leftovers recovery
21
Tapu Fini
WaterFairy
SOFT CHECK
View matchup
73.304
41.4%
Standard error 5.75 points
▾
Tapu Fini Nature's Madness vs. 252 HP Clefable: 197-197 (50 - 50%) -- guaranteed 3HKO after Leftovers recovery
22
Toxapex
PoisonWater
SOFT CHECK
View matchup
263.21
27.1%
Standard error 2.74 points
▾
252+ SpA Toxapex Scald vs. 252 HP / 252+ SpD Clefable: 64-76 (16.2 - 19.2%) -- possible 8HKO
23
Medicham-Mega
FightingPsychic
SOFT CHECK
View matchup
129.455
31.7%
Standard error 4.09 points
▾
252+ Atk Pure Power Medicham-Mega Zen Headbutt vs. 252 HP / 0 Def Clefable: 310-366 (78.6 - 92.8%) -- guaranteed 2HKO after Leftovers recovery
24
Ferrothorn
GrassSteel
SOFT CHECK
View matchup
152.112
28.0%
Standard error 3.64 points
▾
252+ Atk Ferrothorn Power Whip vs. 252 HP / 0 Def Clefable: 223-264 (56.5 - 67%) -- guaranteed 2HKO after Leftovers recovery
25
Latias-Mega
DragonPsychic
SOFT CHECK
View matchup
143.884
26.9%
Standard error 3.70 points
▾
252+ SpA Latias-Mega Psychic vs. 252 HP / 252+ SpD Clefable: 132-156 (33.5 - 39.5%) -- 17.3% chance to 3HKO after Leftovers recovery
26
Scizor-Mega
BugSteel
SOFT CHECK
View matchup
21.682
54.1%
Standard error 10.70 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
27
Tornadus-Therian
Flying
SOFT CHECK
View matchup
118.908
27.1%
Standard error 4.08 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
28
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
29
Tangrowth
Grass
SOFT CHECK
View matchup
20.15
40.7%
Standard error 10.94 points
▾
252+ Atk Tangrowth Earthquake vs. 252 HP / 0 Def Clefable: 130-153 (32.9 - 38.8%) -- 6.9% chance to 3HKO after Leftovers recovery
30
Reuniclus
Psychic
SOFT CHECK
View matchup
23.523
36.1%
Standard error 9.91 points
▾
252+ SpA Reuniclus Psyshock vs. 252 HP / 0 Def Clefable: 181-214 (45.9 - 54.3%) -- 5.9% chance to 2HKO after Leftovers recovery
Ranked #18 with 10.85% usage. Sorted by conservative score.