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
Serperior
Grass
DEFENSIVE CHECK
View matchup
28.549
91.5%
Standard error 5.21 points
▾
252+ Atk Garchomp Outrage vs. 252 HP / 252+ Def Serperior: 160-190 (45.1 - 53.6%) -- 39.8% chance to 2HKO
02
Weavile
DarkIce
OFFENSIVE CHECK
View matchup
73.423
76.2%
Standard error 4.97 points
▾
252+ Atk Choice Band Weavile Icicle Crash vs. 252 HP / 0 Def Garchomp: 904-1068 (215.2 - 254.2%) -- guaranteed OHKO
03
Clefable
Fairy
DEFENSIVE CHECK
View matchup
85.963
69.7%
Standard error 4.96 points
▾
252+ Atk Garchomp Earthquake vs. 252 HP / 252+ Def Clefable: 159-187 (40.3 - 47.4%) -- guaranteed 3HKO after Leftovers recovery
04
Thundurus
ElectricFlying
OFFENSIVE CHECK
View matchup
46.85
71.5%
Standard error 6.59 points
▾
252+ SpA Thundurus Hidden Power Ice vs. 252 HP / 252+ SpD Garchomp: 224-268 (53.3 - 63.8%) -- guaranteed 2HKO
05
Keldeo
WaterFighting
OFFENSIVE CHECK
View matchup
55.689
67.6%
Standard error 6.27 points
▾
252+ SpA Choice Specs Keldeo Icy Wind vs. 252 HP / 252+ SpD Garchomp: 316-376 (75.2 - 89.5%) -- guaranteed 2HKO
06
Skarmory
SteelFlying
DEFENSIVE CHECK
View matchup
50.181
65.9%
Standard error 6.69 points
▾
0- SpA Garchomp Fire Blast vs. 252 HP / 0 SpD Skarmory: 158-188 (47.3 - 56.2%) -- 82.4% chance to 2HKO
07
Zapdos
ElectricFlying
SOFT CHECK
View matchup
67.607
52.6%
Standard error 6.07 points
▾
252+ SpA Zapdos Hidden Power Ice vs. 252 HP / 252+ SpD Garchomp: 224-268 (53.3 - 63.8%) -- guaranteed 2HKO
08
Landorus-Therian
GroundFlying
SOFT CHECK
View matchup
92.496
49.0%
Standard error 5.20 points
▾
252+ Atk Landorus-Therian Explosion vs. 252 HP / 0 Def Garchomp: 338-398 (80.4 - 94.7%) -- guaranteed 2HKO
09
Metagross-Mega
SteelPsychic
SOFT CHECK
View matchup
28.725
53.8%
Standard error 9.30 points
▾
252+ Atk Tough Claws Metagross-Mega Ice Punch vs. 252 HP / 0 Def Garchomp: 532-628 (126.6 - 149.5%) -- guaranteed OHKO
10
Excadrill
GroundSteel
SOFT CHECK
View matchup
154.286
28.9%
Standard error 3.65 points
▾
252+ Atk Excadrill Earthquake vs. 252 HP / 0 Def Garchomp: 193-228 (45.9 - 54.2%) -- 50.8% chance to 2HKO
11
Garchomp
DragonGround
SOFT CHECK
View matchup
30.559
48.3%
Standard error 9.04 points
▾
252+ Atk Garchomp Outrage vs. 252 HP / 0 Def Garchomp: 450-530 (107.1 - 126.1%) -- guaranteed OHKO
12
Tornadus-Therian
Flying
SOFT CHECK
View matchup
33.49
44.8%
Standard error 8.59 points
▾
0- SpA Tornadus-Therian Hidden Power Ice vs. 252 HP / 252+ SpD Garchomp: 136-164 (32.3 - 39%) -- 99.3% chance to 3HKO
13
Rotom-Wash
ElectricWater
SOFT CHECK
View matchup
25.517
46.0%
Standard error 9.87 points
▾
252+ SpA Rotom-Wash Hydro Pump vs. 252 HP / 252+ SpD Garchomp: 136-162 (32.3 - 38.5%) -- 98.1% chance to 3HKO
14
Ferrothorn
GrassSteel
SOFT CHECK
View matchup
20.041
42.3%
Standard error 11.04 points
▾
252+ Atk Ferrothorn Power Whip vs. 252 HP / 0 Def Garchomp: 180-213 (42.8 - 50.7%) -- 2.3% chance to 2HKO
15
Lopunny-Mega
NormalFighting
SOFT CHECK
View matchup
20.658
39.8%
Standard error 10.77 points
▾
252+ Atk Lopunny-Mega Ice Punch vs. 252 HP / 0 Def Garchomp: 388-460 (92.3 - 109.5%) -- 56.3% chance to OHKO
16
Tyranitar
RockDark
SOFT CHECK
View matchup
30.37
27.8%
Standard error 8.13 points
▾
252+ Atk Tyranitar Ice Punch vs. 252 HP / 0 Def Garchomp: 384-456 (91.4 - 108.5%) -- 50% chance to OHKO
17
Heatran
FireSteel
SOFT CHECK
View matchup
75.548
6.4%
Standard error 2.82 points
▾
252+ SpA Heatran Earth Power vs. 252 HP / 252+ SpD Garchomp: 86-102 (20.4 - 24.2%) -- guaranteed 5HKO
18
Scizor-Mega
BugSteel
SOFT CHECK
View matchup
22.421
21.7%
Standard error 8.71 points
▾
252+ Atk Technician Scizor-Mega Bug Bite vs. 252 HP / 0 Def Garchomp: 187-222 (44.5 - 52.8%) -- 25% chance to 2HKO
19
Volcanion
FireWater
SOFT CHECK
View matchup
20.384
24.2%
Standard error 9.48 points
▾
252+ SpA Volcanion Steam Eruption vs. 252 HP / 252+ SpD Garchomp: 159-187 (37.8 - 44.5%) -- guaranteed 3HKO
Ranked #4 with 21.76% usage. Sorted by conservative score.