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
Jirachi
SteelPsychic
DEFENSIVE CHECK
View matchup
31.822
87.0%
Standard error 5.97 points
▾
252+ Atk Skarmory Drill Peck vs. 252 HP / 252+ Def Jirachi: 38-45 (9.4 - 11.1%)
02
Suicune
Water
DEFENSIVE CHECK
View matchup
25.513
83.9%
Standard error 7.27 points
▾
252+ Atk Skarmory Drill Peck vs. 252 HP / 252+ Def Suicune: 68-81 (16.8 - 20%) -- possible 7HKO
03
Zapdos
ElectricFlying
OFFENSIVE CHECK
View matchup
79.015
80.0%
Standard error 7.74 points
▾
252+ SpA Zapdos Thunderbolt vs. 252 HP / 252+ SpD Skarmory: 300-354 (89.8 - 105.9%) -- 37.5% chance to OHKO
04
Starmie
WaterPsychic
OFFENSIVE CHECK
View matchup
26.814
77.8%
Standard error 8.03 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
05
Gengar
GhostPoison
OFFENSIVE CHECK
View matchup
22.535
79.4%
Standard error 8.52 points
▾
252+ SpA Gengar Thunderbolt vs. 252 HP / 252+ SpD Skarmory: 207-244 (61.9 - 73%) -- guaranteed 2HKO after Leftovers recovery
06
Tyranitar
RockDark
OFFENSIVE CHECK
View matchup
120.245
68.9%
Standard error 7.22 points
▾
252+ Atk Tyranitar Focus Punch vs. 252 HP / 0 Def Skarmory: 137-162 (41 - 48.5%) -- guaranteed 3HKO after Leftovers recovery
07
Forretress
BugSteel
DEFENSIVE CHECK
View matchup
34.837
62.1%
Standard error 8.22 points
▾
252+ Atk Skarmory Drill Peck vs. 252 HP / 252+ Def Forretress: 59-70 (16.6 - 19.7%) -- possible 7HKO
08
Salamence
DragonFlying
OFFENSIVE CHECK
View matchup
47.834
64.1%
Standard error 9.56 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
09
Blissey
Normal
DEFENSIVE CHECK
View matchup
116.418
55.7%
Standard error 7.89 points
▾
252+ Atk Skarmory Drill Peck vs. 252 HP / 252+ Def Blissey: 188-222 (26.3 - 31%) -- 10.9% chance to 4HKO after Leftovers recovery
10
Swampert
WaterGround
SOFT CHECK
View matchup
99.823
52.2%
Standard error 8.63 points
▾
252+ SpA Swampert Hydro Pump vs. 252 HP / 252+ SpD Skarmory: 146-172 (43.7 - 51.4%) -- guaranteed 3HKO after Leftovers recovery
11
Skarmory
SteelFlying
SOFT CHECK
View matchup
124.967
47.1%
Standard error 7.64 points
▾
252+ Atk Skarmory Drill Peck vs. 252 HP / 0 Def Skarmory: 39-46 (11.6 - 13.7%)
12
Aerodactyl
RockFlying
OFFENSIVE CHECK
View matchup
24.574
55.4%
Standard error 10.03 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
13
Metagross
SteelPsychic
SOFT CHECK
View matchup
33.025
50.1%
Standard error 8.70 points
▾
252+ Atk Metagross Explosion vs. 252 HP / 0 Def Skarmory: 229-270 (68.5 - 80.8%) -- guaranteed 2HKO after Leftovers recovery
14
Celebi
PsychicGrass
SOFT CHECK
View matchup
26.354
49.6%
Standard error 9.74 points
▾
252+ SpA Celebi Hidden Power Fire vs. 252 HP / 252+ SpD Skarmory: 127-150 (38 - 44.9%) -- guaranteed 3HKO after Leftovers recovery
15
Snorlax
Normal
SOFT CHECK
View matchup
31.146
34.7%
Standard error 8.53 points
▾
0- Atk Snorlax Self-Destruct vs. 252 HP / 0 Def Skarmory: 156-184 (46.7 - 55%) -- 14.1% chance to 2HKO after Leftovers recovery
16
Claydol
GroundPsychic
SOFT CHECK
View matchup
67.979
16.9%
Standard error 6.39 points
▾
252+ Atk Claydol Explosion vs. 252 HP / 0 Def Skarmory: 148-175 (44.3 - 52.3%) -- guaranteed 3HKO after Leftovers recovery
Ranked #3 with 36.04% usage. Sorted by conservative score.