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
Flutter Mane
GhostFairy
OFFENSIVE CHECK
View matchup
62.777
78.2%
Standard error 7.26 points
▾
252+ SpA Choice Specs Flutter Mane Moonblast vs. 252 HP / 252+ SpD Landorus: 219-258 (57.3 - 67.5%) -- guaranteed 2HKO
02
Iron Treads
GroundSteel
DEFENSIVE CHECK
View matchup
107.43
73.7%
Standard error 7.33 points
▾
252+ SpA Life Orb Sheer Force Landorus Focus Blast vs. 252 HP / 252+ SpD Iron Treads: 400-473 (104.1 - 123.1%) -- guaranteed OHKO
03
Greninja
WaterDark
OFFENSIVE CHECK
View matchup
120.027
67.0%
Standard error 7.17 points
▾
252+ SpA Protean Greninja Ice Beam vs. 252 HP / 252+ SpD Landorus: 460-544 (120.4 - 142.4%) -- guaranteed OHKO
04
Latios
DragonPsychic
OFFENSIVE CHECK
View matchup
37.968
65.5%
Standard error 7.72 points
▾
252+ SpA Expert Belt Latios Ice Beam vs. 252 HP / 252+ SpD Landorus: 432-509 (113 - 133.2%) -- guaranteed OHKO
05
Gliscor
GroundFlying
DEFENSIVE CHECK
View matchup
109.792
59.7%
Standard error 7.78 points
▾
252+ SpA Life Orb Sheer Force Landorus Psychic vs. 252 HP / 252+ SpD Gliscor: 144-170 (40.6 - 48%) -- guaranteed 3HKO
06
Mamoswine
IceGround
OFFENSIVE CHECK
View matchup
21.849
65.8%
Standard error 10.15 points
▾
252+ Atk Mamoswine Icicle Crash vs. 252 HP / 0 Def Landorus: 672-792 (175.9 - 207.3%) -- guaranteed OHKO
07
Dragapult
DragonGhost
OFFENSIVE CHECK
View matchup
90.655
57.2%
Standard error 8.94 points
▾
252+ Atk Dragapult Dragon Darts (2 hits) vs. 252 HP / 0 Def Landorus: 186-222 (48.6 - 58.1%) -- 99.4% chance to 2HKO
08
Articuno
IceFlying
SOFT CHECK
View matchup
38.528
53.0%
Standard error 8.04 points
▾
252+ SpA Articuno Freeze-Dry vs. 252 HP / 252+ SpD Landorus: 336-400 (87.9 - 104.7%) -- 31.3% chance to OHKO
09
Tornadus-Therian
Flying
SOFT CHECK
View matchup
29.591
52.9%
Standard error 9.18 points
▾
252+ SpA Tornadus-Therian Icy Wind vs. 252 HP / 252+ SpD Landorus: 196-232 (51.3 - 60.7%) -- guaranteed 2HKO
10
Latias
DragonPsychic
DEFENSIVE CHECK
View matchup
21.398
55.9%
Standard error 10.73 points
▾
0- Atk Life Orb Landorus U-turn vs. 252 HP / 0 Def Latias: 156-185 (42.8 - 50.8%) -- 2.3% chance to 2HKO
11
Landorus
GroundFlying
SOFT CHECK
View matchup
74.679
43.8%
Standard error 8.07 points
▾
252+ SpA Life Orb Sheer Force Landorus Psychic vs. 252 HP / 252+ SpD Landorus: 139-164 (36.3 - 42.9%) -- guaranteed 3HKO
12
Meowscarada
GrassDark
SOFT CHECK
View matchup
84.991
48.8%
Standard error 9.37 points
▾
252+ Atk Choice Band Protean Meowscarada Triple Axel (120 BP) (3 hits) vs. 252 HP / 0 Def Landorus: 1256-1492 (328.7 - 390.5%) -- guaranteed OHKO
13
Goodra-Hisui
SteelDragon
SOFT CHECK
View matchup
84.843
42.3%
Standard error 9.07 points
▾
0- SpA Goodra-Hisui Ice Beam vs. 252 HP / 252+ SpD Landorus: 212-252 (55.4 - 65.9%) -- guaranteed 2HKO
14
Great Tusk
GroundFighting
SOFT CHECK
View matchup
23.364
45.3%
Standard error 10.30 points
▾
252+ Atk Great Tusk Ice Spinner vs. 252 HP / 0 Def Landorus: 424-500 (110.9 - 130.8%) -- guaranteed OHKO
15
Ceruledge
FireGhost
SOFT CHECK
View matchup
23.196
37.1%
Standard error 10.03 points
▾
252+ Atk Ceruledge Poltergeist vs. 252 HP / 0 Def Landorus: 210-247 (54.9 - 64.6%) -- guaranteed 2HKO
16
Raging Bolt
ElectricDragon
SOFT CHECK
View matchup
51.636
34.2%
Standard error 9.32 points
▾
252+ SpA Raging Bolt Draco Meteor vs. 252 HP / 252+ SpD Landorus: 202-238 (52.8 - 62.3%) -- guaranteed 2HKO
17
Skarmory
SteelFlying
SOFT CHECK
View matchup
163.284
15.1%
Standard error 4.84 points
▾
252+ Atk Skarmory Brave Bird vs. 252 HP / 0 Def Landorus: 169-201 (44.2 - 52.6%) -- 20.7% chance to 2HKO
18
Archaludon
SteelDragon
SOFT CHECK
View matchup
154.192
12.4%
Standard error 4.57 points
▾
0- SpA Archaludon Draco Meteor vs. 252 HP / 252+ SpD Landorus: 127-150 (33.2 - 39.2%) -- 99.9% chance to 3HKO
19
Sableye
DarkGhost
SOFT CHECK
View matchup
21.032
35.8%
Standard error 10.45 points
▾
252+ Atk Sableye Knock Off (97.5 BP) vs. 252 HP / 0 Def Landorus: 132-156 (34.5 - 40.8%) -- guaranteed 3HKO
20
Corviknight
FlyingSteel
SOFT CHECK
View matchup
60.631
24.8%
Standard error 7.84 points
▾
252+ Atk Corviknight Brave Bird vs. 252 HP / 0 Def Landorus: 180-213 (47.1 - 55.7%) -- 76.6% chance to 2HKO
21
Gholdengo
SteelGhost
SOFT CHECK
View matchup
81.317
23.6%
Standard error 8.06 points
▾
252+ SpA Gholdengo Make It Rain vs. 252 HP / 252+ SpD Landorus: 183-216 (47.9 - 56.5%) -- 85.9% chance to 2HKO
22
Mandibuzz
DarkFlying
SOFT CHECK
View matchup
20.048
30.0%
Standard error 10.23 points
▾
252+ Atk Mandibuzz Brave Bird vs. 252 HP / 0 Def Landorus: 151-178 (39.5 - 46.5%) -- guaranteed 3HKO
23
Weezing-Galar
PoisonFairy
SOFT CHECK
View matchup
24.223
19.1%
Standard error 7.98 points
▾
252+ SpA Weezing-Galar Strange Steam vs. 252 HP / 252+ SpD Landorus: 102-120 (26.7 - 31.4%) -- guaranteed 4HKO
24
Heatran
FireSteel
SOFT CHECK
View matchup
20.786
24.6%
Standard error 9.45 points
▾
252+ SpA Heatran Magma Storm vs. 252 HP / 252+ SpD Landorus: 150-177 (39.2 - 46.3%) -- guaranteed 2HKO after trapping damage
25
Pecharunt
PoisonGhost
SOFT CHECK
View matchup
20.862
4.2%
Standard error 4.40 points
▾
252+ SpA Pecharunt Shadow Ball vs. 252 HP / 252+ SpD Landorus: 93-109 (24.3 - 28.5%) -- 97.9% chance to 4HKO
26
Toxapex
PoisonWater
SOFT CHECK
View matchup
22.581
8.6%
Standard error 5.90 points
▾
252+ SpA Toxapex Surf vs. 252 HP / 252+ SpD Landorus: 152-182 (39.7 - 47.6%) -- guaranteed 3HKO
Ranked #7 with 14.20% usage. Sorted by conservative score.