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
Kingambit
DarkSteel
SOFT CHECK
View matchup
603.851
47.2%
Standard error 2.03 points
▾
252+ Atk Life Orb Kingambit Kowtow Cleave vs. 252 HP / 0 Def Basculegion: 304-359 (133.9 - 158.1%) -- guaranteed OHKO
02
Farigiraf
NormalPsychic
SOFT CHECK
View matchup
167.357
49.3%
Standard error 3.86 points
▾
252+ SpA Farigiraf Thunderbolt vs. 252 HP / 252+ SpD Basculegion: 88-104 (38.7 - 45.8%) -- guaranteed 3HKO
03
Basculegion
WaterGhost
SOFT CHECK
View matchup
297.533
42.3%
Standard error 2.86 points
▾
252+ Atk Adaptability Basculegion Last Respects vs. 252 HP / 0 Def Basculegion: 160-192 (70.4 - 84.5%) -- guaranteed 2HKO
04
Garchomp
DragonGround
SOFT CHECK
View matchup
394.081
38.5%
Standard error 2.45 points
▾
252+ Atk Life Orb Garchomp Earthquake vs. 252 HP / 0 Def Basculegion: 173-204 (76.2 - 89.8%) -- guaranteed 2HKO
05
Venusaur
GrassPoison
SOFT CHECK
View matchup
207.402
41.4%
Standard error 3.42 points
▾
252+ SpA Venusaur Leaf Storm vs. 252 HP / 252+ SpD Basculegion: 176-210 (77.5 - 92.5%) -- guaranteed 2HKO
06
Charizard-Mega-Y
FireFlying
SOFT CHECK
View matchup
483.684
36.3%
Standard error 2.19 points
▾
252+ SpA Charizard-Mega-Y Solar Beam vs. 252 HP / 252+ SpD Basculegion: 152-180 (66.9 - 79.2%) -- guaranteed 2HKO
07
Sneasler
FightingPoison
SOFT CHECK
View matchup
457.785
36.5%
Standard error 2.25 points
▾
252+ Atk Sneasler Gunk Shot vs. 252 HP / 0 Def Basculegion: 80-94 (35.2 - 41.4%) -- guaranteed 3HKO
08
Whimsicott
GrassFairy
SOFT CHECK
View matchup
330.227
37.5%
Standard error 2.66 points
▾
252+ SpA Whimsicott Moonblast vs. 252 HP / 252+ SpD Basculegion: 55-66 (24.2 - 29%) -- 98.9% chance to 4HKO
09
Sylveon
Fairy
SOFT CHECK
View matchup
221.403
37.6%
Standard error 3.26 points
▾
252+ SpA Fairy Feather Pixilate Sylveon Hyper Beam vs. 252 HP / 252+ SpD Basculegion: 156-184 (68.7 - 81%) -- guaranteed 2HKO
10
Floette-Mega
Fairy
SOFT CHECK
View matchup
247.184
35.4%
Standard error 3.04 points
▾
252+ SpA Fairy Aura Floette-Mega Light of Ruin vs. 252 HP / 252+ SpD Basculegion: 171-202 (75.3 - 88.9%) -- guaranteed 2HKO
11
Sinistcha
GrassGhost
SOFT CHECK
View matchup
319.931
32.8%
Standard error 2.63 points
▾
252+ SpA Sinistcha Leaf Storm vs. 252 HP / 252+ SpD Basculegion: 204-240 (89.8 - 105.7%) -- 37.5% chance to OHKO
12
Incineroar
FireDark
SOFT CHECK
View matchup
852.117
28.0%
Standard error 1.54 points
▾
252+ Atk Incineroar Darkest Lariat vs. 252 HP / 0 Def Basculegion: 206-246 (90.7 - 108.3%) -- 50% chance to OHKO
13
Staraptor-Mega
FightingFlying
SOFT CHECK
View matchup
158.973
36.9%
Standard error 3.83 points
▾
252+ Atk Staraptor-Mega Brave Bird vs. 252 HP / 0 Def Basculegion: 169-199 (74.4 - 87.6%) -- guaranteed 2HKO
14
Pelipper
WaterFlying
SOFT CHECK
View matchup
140.52
37.1%
Standard error 4.07 points
▾
252+ SpA Pelipper Hurricane vs. 252 HP / 252+ SpD Basculegion: 73-87 (32.1 - 38.3%) -- 95.7% chance to 3HKO
15
Excadrill
GroundSteel
SOFT CHECK
View matchup
71.348
43.3%
Standard error 5.87 points
▾
252+ Atk Excadrill Earthquake vs. 252 HP / 0 Def Basculegion: 136-162 (59.9 - 71.3%) -- guaranteed 2HKO
16
Archaludon
SteelDragon
SOFT CHECK
View matchup
168.131
34.0%
Standard error 3.65 points
▾
+1 252+ SpA Archaludon Electro Shot vs. 252 HP / 252+ SpD Basculegion: 204-242 (89.8 - 106.6%) -- 37.5% chance to OHKO
17
Arcanine-Hisui
FireRock
SOFT CHECK
View matchup
92.784
38.4%
Standard error 5.05 points
▾
252+ Atk Arcanine-Hisui Head Smash vs. 252 HP / 0 Def Basculegion: 183-216 (80.6 - 95.1%) -- guaranteed 2HKO
18
Tyranitar-Mega
RockDark
SOFT CHECK
View matchup
98.229
35.2%
Standard error 4.82 points
▾
252+ Atk Tyranitar-Mega Knock Off (97.5 BP) vs. 252 HP / 0 Def Basculegion: 306-362 (134.8 - 159.4%) -- guaranteed OHKO
19
Gholdengo
SteelGhost
SOFT CHECK
View matchup
74.075
38.0%
Standard error 5.64 points
▾
252+ SpA Life Orb Gholdengo Shadow Ball vs. 252 HP / 252+ SpD Basculegion: 174-205 (76.6 - 90.3%) -- guaranteed 2HKO
20
Lycanroc-Dusk
Rock
SOFT CHECK
View matchup
36.068
46.3%
Standard error 8.30 points
▾
252+ Atk Lycanroc-Dusk Rock Blast (3 hits) vs. 252 HP / 0 Def Basculegion: 93-111 (40.9 - 48.8%) -- guaranteed 3HKO
21
Gengar-Mega
GhostPoison
SOFT CHECK
View matchup
86.128
31.9%
Standard error 5.02 points
▾
252+ SpA Gengar-Mega Shadow Ball vs. 252 HP / 252+ SpD Basculegion: 158-188 (69.6 - 82.8%) -- guaranteed 2HKO
22
Raichu-Mega-Y
Electric
SOFT CHECK
View matchup
49.213
38.3%
Standard error 6.93 points
▾
252+ SpA Raichu-Mega-Y Zap Cannon vs. 252 HP / 252+ SpD Basculegion: 228-270 (100.4 - 118.9%) -- guaranteed OHKO
23
Delphox-Mega
FirePsychic
SOFT CHECK
View matchup
98.005
27.6%
Standard error 4.52 points
▾
252+ SpA Delphox-Mega Psyshock vs. 252 HP / 0 Def Basculegion: 124-147 (54.6 - 64.7%) -- guaranteed 2HKO
24
Toxapex
PoisonWater
SOFT CHECK
View matchup
104.582
26.7%
Standard error 4.33 points
▾
252+ SpA Toxapex Infestation vs. 252 HP / 252+ SpD Basculegion: 3-4 (1.3 - 1.7%) -- guaranteed 8HKO after trapping damage
25
Politoed
Water
SOFT CHECK
View matchup
50.925
35.0%
Standard error 6.68 points
▾
252+ SpA Politoed Weather Ball (100 BP Water) vs. 252 HP / 252+ SpD Basculegion in Rain: 48-57 (21.1 - 25.1%) -- 0.1% chance to 4HKO
26
Maushold
Normal
SOFT CHECK
View matchup
46.353
36.6%
Standard error 7.07 points
▾
27
Torkoal
Fire
SOFT CHECK
View matchup
22.848
48.6%
Standard error 10.46 points
▾
252+ SpA Torkoal Solar Beam vs. 252 HP / 252+ SpD Basculegion: 98-116 (43.1 - 51.1%) -- 3.1% chance to 2HKO
28
Swampert-Mega
WaterGround
SOFT CHECK
View matchup
65.317
28.3%
Standard error 5.57 points
▾
252+ Atk Swampert-Mega Knock Off (97.5 BP) vs. 252 HP / 0 Def Basculegion: 192-226 (84.5 - 99.5%) -- guaranteed 2HKO
29
Dragonite
DragonFlying
SOFT CHECK
View matchup
29.619
41.4%
Standard error 9.05 points
▾
252+ Atk Life Orb Dragonite Dragon Claw vs. 252 HP / 0 Def Basculegion: 142-168 (62.5 - 74%) -- guaranteed 2HKO
30
Grimmsnarl
DarkFairy
SOFT CHECK
View matchup
103.235
17.0%
Standard error 3.70 points
▾
252+ Atk Grimmsnarl Sucker Punch vs. 252 HP / 0 Def Basculegion: 176-210 (77.5 - 92.5%) -- guaranteed 2HKO
Ranked #5 with 37.37% usage. Sorted by conservative score.