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
Gengar
GhostPoison
OFFENSIVE CHECK
View matchup
75.605
79.4%
Standard error 4.66 points
▾
252+ SpA Gengar Thunderbolt vs. 252 HP / 252+ SpD Skarmory: 207-244 (61.9 - 73%) -- guaranteed 2HKO after Leftovers recovery
02
Jirachi
SteelPsychic
DEFENSIVE CHECK
View matchup
55.114
80.7%
Standard error 5.32 points
▾
252+ Atk Skarmory Drill Peck vs. 252 HP / 252+ Def Jirachi: 38-45 (9.4 - 11.1%)
03
Tyranitar
RockDark
OFFENSIVE CHECK
View matchup
196.515
69.9%
Standard error 3.27 points
▾
252+ Atk Tyranitar Focus Punch vs. 252 HP / 0 Def Skarmory: 137-162 (41 - 48.5%) -- guaranteed 3HKO after Leftovers recovery
04
Zapdos
ElectricFlying
OFFENSIVE CHECK
View matchup
133.584
71.9%
Standard error 3.89 points
▾
252+ SpA Zapdos Thunderbolt vs. 252 HP / 252+ SpD Skarmory: 300-354 (89.8 - 105.9%) -- 37.5% chance to OHKO
05
Starmie
WaterPsychic
OFFENSIVE CHECK
View matchup
135.164
70.3%
Standard error 3.93 points
▾
252+ SpA Starmie Thunderbolt vs. 252 HP / 252+ SpD Skarmory: 171-202 (51.1 - 60.4%) -- 91.8% chance to 2HKO after Leftovers recovery
06
Salamence
DragonFlying
OFFENSIVE CHECK
View matchup
84.916
66.6%
Standard error 5.12 points
▾
0- SpA Salamence Fire Blast vs. 252 HP / 252+ SpD Skarmory: 153-180 (45.8 - 53.8%) -- 3.9% chance to 2HKO after Leftovers recovery
07
Suicune
Water
DEFENSIVE CHECK
View matchup
41.541
72.4%
Standard error 6.94 points
▾
252+ Atk Skarmory Drill Peck vs. 252 HP / 252+ Def Suicune: 68-81 (16.8 - 20%) -- possible 7HKO
08
Forretress
BugSteel
DEFENSIVE CHECK
View matchup
113.126
58.9%
Standard error 4.63 points
▾
252+ Atk Skarmory Drill Peck vs. 252 HP / 252+ Def Forretress: 59-70 (16.6 - 19.7%) -- possible 7HKO
09
Blissey
Normal
SOFT CHECK
View matchup
195.249
53.3%
Standard error 3.57 points
▾
0- SpA Blissey Thunderbolt vs. 252 HP / 252+ SpD Skarmory: 88-104 (26.3 - 31.1%) -- 12.2% chance to 4HKO after Leftovers recovery
10
Registeel
Steel
DEFENSIVE CHECK
View matchup
27.454
67.2%
Standard error 8.96 points
▾
252+ Atk Skarmory Drill Peck vs. 252 HP / 252+ Def Registeel: 28-33 (7.6 - 9%)
11
Skarmory
SteelFlying
SOFT CHECK
View matchup
182.012
45.9%
Standard error 3.69 points
▾
252+ Atk Skarmory Drill Peck vs. 252 HP / 0 Def Skarmory: 39-46 (11.6 - 13.7%)
12
Swampert
WaterGround
SOFT CHECK
View matchup
163.69
41.5%
Standard error 3.85 points
▾
252+ SpA Swampert Hydro Pump vs. 252 HP / 252+ SpD Skarmory: 146-172 (43.7 - 51.4%) -- guaranteed 3HKO after Leftovers recovery
13
Aerodactyl
RockFlying
SOFT CHECK
View matchup
64.301
46.9%
Standard error 6.22 points
▾
252+ Atk Choice Band Aerodactyl Rock Slide vs. 252 HP / 0 Def Skarmory: 130-154 (38.9 - 46.1%) -- guaranteed 3HKO after Leftovers recovery
14
Metagross
SteelPsychic
SOFT CHECK
View matchup
85.907
40.0%
Standard error 5.29 points
▾
252+ Atk Metagross Explosion vs. 252 HP / 0 Def Skarmory: 229-270 (68.5 - 80.8%) -- guaranteed 2HKO after Leftovers recovery
15
Celebi
PsychicGrass
SOFT CHECK
View matchup
79.189
39.4%
Standard error 5.49 points
▾
252+ SpA Celebi Hidden Power Fire vs. 252 HP / 252+ SpD Skarmory: 127-150 (38 - 44.9%) -- guaranteed 3HKO after Leftovers recovery
16
Claydol
GroundPsychic
SOFT CHECK
View matchup
87.031
18.6%
Standard error 4.17 points
▾
252+ Atk Claydol Explosion vs. 252 HP / 0 Def Skarmory: 148-175 (44.3 - 52.3%) -- guaranteed 3HKO after Leftovers recovery
17
Dugtrio
Ground
SOFT CHECK
View matchup
46.618
6.0%
Standard error 3.49 points
▾
252+ Atk Choice Band Dugtrio Rock Slide vs. 252 HP / 0 Def Skarmory: 73-86 (21.8 - 25.7%) -- possible 5HKO
Ranked #3 with 36.74% usage. Sorted by conservative score.