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
Dragonite
DragonFlying
OFFENSIVE CHECK
View matchup
124.532
84.3%
Standard error 4.60 points
▾
252+ Atk Dragonite Fly vs. 252 HP / 0 Def Volcarona: 470-554 (125.6 - 148.1%) -- guaranteed OHKO
02
Clodsire
PoisonGround
DEFENSIVE CHECK
View matchup
73.854
77.2%
Standard error 6.71 points
▾
252+ SpA Volcarona Psychic vs. 252 HP / 252+ SpD Clodsire: 160-190 (34.4 - 40.9%) -- 59.3% chance to 3HKO after Black Sludge recovery
03
Diancie-Mega
RockFairy
OFFENSIVE CHECK
View matchup
76.84
76.3%
Standard error 6.66 points
▾
0- Atk Diancie-Mega Diamond Storm vs. 252 HP / 0 Def Volcarona: 828-976 (221.3 - 260.9%) -- guaranteed OHKO
04
Ceruledge
FireGhost
OFFENSIVE CHECK
View matchup
28.273
78.7%
Standard error 7.70 points
▾
252+ Atk Ceruledge Poltergeist vs. 252 HP / 0 Def Volcarona: 273-322 (72.9 - 86%) -- guaranteed 2HKO
05
Garchomp
DragonGround
OFFENSIVE CHECK
View matchup
123.786
69.4%
Standard error 7.00 points
▾
252+ Atk Garchomp Stone Edge vs. 252 HP / 0 Def Volcarona: 680-804 (181.8 - 214.9%) -- guaranteed OHKO
06
Zamazenta
Fighting
SOFT CHECK
View matchup
250.188
53.9%
Standard error 5.24 points
▾
252+ Atk Zamazenta Stone Edge vs. 252 HP / 0 Def Volcarona: 644-760 (172.1 - 203.2%) -- guaranteed OHKO
07
Ogerpon-Wellspring
GrassWater
OFFENSIVE CHECK
View matchup
37.627
62.7%
Standard error 7.89 points
▾
252+ Atk Wellspring Mask Ogerpon-Wellspring Ivy Cudgel vs. 252 HP / 0 Def Volcarona: 576-680 (154 - 181.8%) -- guaranteed OHKO
08
Urshifu-Rapid-Strike
FightingWater
OFFENSIVE CHECK
View matchup
92.929
58.5%
Standard error 7.00 points
▾
252+ Atk Urshifu-Rapid-Strike Surging Strikes (3 hits) vs. 252 HP / 0 Def Volcarona on a critical hit: 576-684 (154 - 182.8%) -- guaranteed OHKO
09
Charizard-Mega-X
FireDragon
OFFENSIVE CHECK
View matchup
25.753
67.1%
Standard error 9.26 points
▾
252+ Atk Tough Claws Charizard-Mega-X Flare Blitz vs. 252 HP / 0 Def Volcarona: 399-469 (106.6 - 125.4%) -- guaranteed OHKO
10
Heatran
FireSteel
OFFENSIVE CHECK
View matchup
79.528
55.1%
Standard error 7.82 points
▾
252+ SpA Heatran Power Gem vs. 252 HP / 252+ SpD Volcarona: 272-320 (72.7 - 85.5%) -- guaranteed 2HKO
11
Blissey
Normal
DEFENSIVE CHECK
View matchup
21.132
64.1%
Standard error 10.44 points
▾
252+ SpA Volcarona Bug Buzz vs. 252 HP / 252+ SpD Blissey: 97-115 (13.5 - 16.1%) -- possible 7HKO
12
Lopunny-Mega
NormalFighting
OFFENSIVE CHECK
View matchup
30.126
57.6%
Standard error 9.00 points
▾
252+ Atk Lopunny-Mega Return vs. 252 HP / 0 Def Volcarona: 270-318 (72.1 - 85%) -- guaranteed 2HKO
13
Volcarona
BugFire
SOFT CHECK
View matchup
52.279
49.0%
Standard error 6.91 points
▾
252+ SpA Volcarona Flamethrower vs. 252 HP / 252+ SpD Volcarona: 117-138 (31.2 - 36.8%) -- 71.6% chance to 3HKO
14
Ursaluna
GroundNormal
SOFT CHECK
View matchup
55
54.4%
Standard error 9.42 points
▾
252+ Atk Ursaluna Headlong Rush vs. 252 HP / 0 Def Volcarona: 322-381 (86 - 101.8%) -- 12.5% chance to OHKO
15
Toxapex
PoisonWater
SOFT CHECK
View matchup
186.946
38.4%
Standard error 5.91 points
▾
252+ SpA Toxapex Scald vs. 252 HP / 252+ SpD Volcarona: 116-138 (31 - 36.8%) -- 65.4% chance to 3HKO
16
Ting-Lu
DarkGround
SOFT CHECK
View matchup
81.955
44.4%
Standard error 7.53 points
▾
252+ Atk Ting-Lu Stone Edge vs. 252 HP / 0 Def Volcarona: 608-716 (162.5 - 191.4%) -- guaranteed OHKO
17
Charizard-Mega-Y
FireFlying
SOFT CHECK
View matchup
30.78
48.5%
Standard error 9.01 points
▾
252+ SpA Charizard-Mega-Y Overheat vs. 252 HP / 252+ SpD Volcarona in Sun: 283-334 (75.6 - 89.3%) -- guaranteed 2HKO
18
Gliscor
GroundFlying
SOFT CHECK
View matchup
123.326
36.3%
Standard error 6.09 points
▾
252+ Atk Gliscor Earthquake vs. 252 HP / 0 Def Volcarona: 205-243 (54.8 - 64.9%) -- guaranteed 2HKO
19
Great Tusk
GroundFighting
SOFT CHECK
View matchup
103.828
37.9%
Standard error 6.53 points
▾
252+ Atk Great Tusk Head Smash vs. 252 HP / 0 Def Volcarona: 1028-1212 (274.8 - 324%) -- guaranteed OHKO
20
Mawile-Mega
SteelFairy
SOFT CHECK
View matchup
23.794
52.2%
Standard error 10.24 points
▾
252+ Atk Huge Power Mawile-Mega Knock Off (97.5 BP) vs. 252 HP / 0 Def Volcarona: 283-334 (75.6 - 89.3%) -- guaranteed 2HKO
21
Cinderace
Fire
SOFT CHECK
View matchup
22.296
53.4%
Standard error 10.57 points
▾
252+ Atk Cinderace Pyro Ball vs. 252 HP / 0 Def Volcarona: 283-334 (75.6 - 89.3%) -- guaranteed 2HKO
22
Moltres
FireFlying
SOFT CHECK
View matchup
36.306
44.0%
Standard error 8.24 points
▾
0- Atk Moltres Brave Bird vs. 252 HP / 0 Def Volcarona: 330-390 (88.2 - 104.2%) -- 25% chance to OHKO
23
Kingambit
DarkSteel
SOFT CHECK
View matchup
187.02
33.6%
Standard error 5.74 points
▾
252+ Atk Black Glasses Kingambit Knock Off (97.5 BP) vs. 252 HP / 0 Def Volcarona: 306-361 (81.8 - 96.5%) -- guaranteed 2HKO
24
Landorus-Therian
GroundFlying
SOFT CHECK
View matchup
132.052
37.9%
Standard error 6.97 points
▾
252+ Atk Landorus-Therian Stone Edge vs. 252 HP / 0 Def Volcarona: 740-872 (197.8 - 233.1%) -- guaranteed OHKO
25
Raging Bolt
ElectricDragon
SOFT CHECK
View matchup
107.448
35.3%
Standard error 6.46 points
▾
252+ SpA Choice Specs Raging Bolt Draco Meteor vs. 252 HP / 252+ SpD Volcarona: 255-300 (68.1 - 80.2%) -- guaranteed 2HKO
26
Tornadus-Therian
Flying
SOFT CHECK
View matchup
56.789
45.8%
Standard error 9.24 points
▾
252+ SpA Tornadus-Therian Hurricane vs. 252 HP / 252+ SpD Volcarona: 246-290 (65.7 - 77.5%) -- guaranteed 2HKO
27
Alomomola
Water
SOFT CHECK
View matchup
399.653
21.0%
Standard error 3.41 points
▾
252+ Atk Alomomola Flip Turn vs. 252 HP / 0 Def Volcarona: 212-252 (56.6 - 67.3%) -- guaranteed 2HKO
28
Chansey
Normal
SOFT CHECK
View matchup
22.407
48.4%
Standard error 10.56 points
▾
Chansey Seismic Toss vs. 252 HP Volcarona: 100-100 (26.7 - 26.7%) -- guaranteed 4HKO
29
Tyranitar-Mega
RockDark
SOFT CHECK
View matchup
67.224
37.6%
Standard error 8.14 points
▾
252+ Atk Tyranitar-Mega Stone Edge vs. 252 HP / 0 Def Volcarona: 1216-1432 (325.1 - 382.8%) -- guaranteed OHKO
30
Clefable
Fairy
SOFT CHECK
View matchup
54.634
40.4%
Standard error 9.33 points
▾
0- Atk Clefable Knock Off (97.5 BP) vs. 252 HP / 0 Def Volcarona: 67-79 (17.9 - 21.1%) -- possible 5HKO
Ranked #24 with 8.46% usage. Sorted by conservative score.