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
Charizard-Mega-X
FireDragon
OFFENSIVE CHECK
View matchup
77.047
81.6%
Standard error 6.19 points
▾
252+ Atk Tough Claws Charizard-Mega-X Outrage vs. 252 HP / 0 Def Kyurem: 612-722 (134.8 - 159%) -- guaranteed OHKO
02
Scizor-Mega
BugSteel
OFFENSIVE CHECK
View matchup
162.761
73.9%
Standard error 5.88 points
▾
252+ Atk Scizor-Mega Close Combat vs. 252 HP / 0 Def Kyurem: 350-412 (77 - 90.7%) -- guaranteed 2HKO after Leftovers recovery
03
Zamazenta
Fighting
OFFENSIVE CHECK
View matchup
288.825
67.5%
Standard error 4.68 points
▾
252+ Atk Zamazenta Close Combat vs. 252 HP / 0 Def Kyurem: 444-524 (97.7 - 115.4%) -- 87.5% chance to OHKO
04
Iron Valiant
FairyFighting
OFFENSIVE CHECK
View matchup
130.993
73.7%
Standard error 6.55 points
▾
252+ Atk Iron Valiant Close Combat vs. 252 HP / 0 Def Kyurem: 470-554 (103.5 - 122%) -- guaranteed OHKO
05
Kingambit
DarkSteel
DEFENSIVE CHECK
View matchup
323.975
64.9%
Standard error 4.43 points
▾
252+ SpA Kyurem Earth Power vs. 252 HP / 252+ SpD Kingambit: 172-204 (42.5 - 50.4%) -- 1.2% chance to 2HKO
06
Volcarona
BugFire
OFFENSIVE CHECK
View matchup
143.975
71.3%
Standard error 6.30 points
▾
252+ SpA Volcarona Bug Buzz vs. 252 HP / 252+ SpD Kyurem: 129-153 (28.4 - 33.7%) -- 94.8% chance to 4HKO after Leftovers recovery
07
Diancie-Mega
RockFairy
OFFENSIVE CHECK
View matchup
114.746
72.9%
Standard error 7.08 points
▾
0- Atk Diancie-Mega Diamond Storm vs. 252 HP / 0 Def Kyurem: 320-378 (70.4 - 83.2%) -- guaranteed 2HKO after Leftovers recovery
08
Tapu Lele
PsychicFairy
OFFENSIVE CHECK
View matchup
122.007
68.2%
Standard error 5.90 points
▾
252+ SpA Tapu Lele Moonblast vs. 252 HP / 252+ SpD Kyurem: 264-312 (58.1 - 68.7%) -- guaranteed 2HKO after Leftovers recovery
09
Tyranitar-Mega
RockDark
DEFENSIVE CHECK
View matchup
142.737
63.6%
Standard error 6.84 points
▾
252+ SpA Kyurem Earth Power vs. 252 HP / 252+ SpD Tyranitar-Mega in Sand: 92-110 (22.7 - 27.2%) -- 50% chance to 4HKO
10
Lopunny-Mega
NormalFighting
OFFENSIVE CHECK
View matchup
40.9
62.7%
Standard error 7.56 points
▾
252+ Atk Lopunny-Mega Close Combat vs. 252 HP / 0 Def Kyurem: 488-576 (107.4 - 126.8%) -- guaranteed OHKO
11
Melmetal
Steel
DEFENSIVE CHECK
View matchup
168.079
57.4%
Standard error 6.32 points
▾
252+ SpA Kyurem Earth Power vs. 252 HP / 252+ SpD Melmetal: 204-240 (43 - 50.6%) -- 2% chance to 2HKO
12
Charizard-Mega-Y
FireFlying
OFFENSIVE CHECK
View matchup
126.792
59.5%
Standard error 7.05 points
▾
252+ SpA Charizard-Mega-Y Overheat vs. 252 HP / 252+ SpD Kyurem in Sun: 313-370 (68.9 - 81.4%) -- guaranteed 2HKO after Leftovers recovery
13
Gholdengo
SteelGhost
SOFT CHECK
View matchup
315.91
48.1%
Standard error 4.68 points
▾
252+ SpA Gholdengo Make It Rain vs. 252 HP / 252+ SpD Kyurem: 338-402 (74.4 - 88.5%) -- guaranteed 2HKO after Leftovers recovery
14
Latios-Mega
DragonPsychic
OFFENSIVE CHECK
View matchup
45.675
58.4%
Standard error 7.29 points
▾
252+ SpA Latios-Mega Draco Meteor vs. 252 HP / 252+ SpD Kyurem: 422-498 (92.9 - 109.6%) -- 56.3% chance to OHKO
15
Clefable
Fairy
SOFT CHECK
View matchup
116.447
49.1%
Standard error 6.33 points
▾
252+ SpA Clefable Moonblast vs. 252 HP / 252+ SpD Kyurem: 212-252 (46.6 - 55.5%) -- 15.6% chance to 2HKO after Leftovers recovery
16
Kyurem
DragonIce
SOFT CHECK
View matchup
131.332
48.1%
Standard error 6.09 points
▾
252+ SpA Kyurem Ice Beam vs. 252 HP / 252+ SpD Kyurem: 126-148 (27.7 - 32.5%) -- 77% chance to 4HKO after Leftovers recovery
17
Blissey
Normal
SOFT CHECK
View matchup
69.674
54.9%
Standard error 8.26 points
▾
Blissey Seismic Toss vs. 252 HP Kyurem: 100-100 (22 - 22%) -- guaranteed 6HKO after Leftovers recovery
18
Keldeo
WaterFighting
SOFT CHECK
View matchup
89.741
49.5%
Standard error 7.14 points
▾
252+ SpA Keldeo Secret Sword vs. 252 HP / 0 Def Kyurem: 332-392 (73.1 - 86.3%) -- guaranteed 2HKO after Leftovers recovery
19
Garchomp
DragonGround
SOFT CHECK
View matchup
86.49
48.9%
Standard error 7.50 points
▾
252+ Atk Garchomp Outrage vs. 252 HP / 0 Def Kyurem: 470-554 (103.5 - 122%) -- guaranteed OHKO
20
Venusaur-Mega
GrassPoison
SOFT CHECK
View matchup
106.774
44.5%
Standard error 6.67 points
▾
252+ SpA Venusaur-Mega Sludge Bomb vs. 252 HP / 252+ SpD Kyurem: 120-142 (26.4 - 31.2%) -- 17% chance to 4HKO after Leftovers recovery
21
Terapagos
Normal
SOFT CHECK
View matchup
161.045
44.1%
Standard error 6.57 points
▾
0- SpA Terapagos Tera Starstorm vs. 252 HP / 252+ SpD Kyurem: 64-76 (14 - 16.7%) -- possible 9HKO
22
Hoopa-Unbound
PsychicDark
SOFT CHECK
View matchup
28.372
54.9%
Standard error 9.34 points
▾
252+ Atk Hoopa-Unbound Drain Punch vs. 252 HP / 0 Def Kyurem: 230-272 (50.6 - 59.9%) -- 85.9% chance to 2HKO after Leftovers recovery
23
Tyranitar
RockDark
SOFT CHECK
View matchup
65.822
51.0%
Standard error 8.64 points
▾
252+ Atk Choice Band Tyranitar Stone Edge vs. 252 HP / 0 Def Kyurem: 600-708 (132.1 - 155.9%) -- guaranteed OHKO
24
Hatterene
PsychicFairy
SOFT CHECK
View matchup
45.318
45.5%
Standard error 7.40 points
▾
252+ SpA Hatterene Draining Kiss vs. 252 HP / 252+ SpD Kyurem: 146-174 (32.1 - 38.3%) -- 1.1% chance to 3HKO after Leftovers recovery
25
Urshifu-Rapid-Strike
FightingWater
SOFT CHECK
View matchup
159.637
41.4%
Standard error 6.56 points
▾
252+ Atk Urshifu-Rapid-Strike Close Combat vs. 252 HP / 0 Def Kyurem: 470-554 (103.5 - 122%) -- guaranteed OHKO
26
Chansey
Normal
SOFT CHECK
View matchup
138.766
35.4%
Standard error 5.62 points
▾
Chansey Seismic Toss vs. 252 HP Kyurem: 100-100 (22 - 22%) -- guaranteed 6HKO after Leftovers recovery
27
Corviknight
FlyingSteel
SOFT CHECK
View matchup
269.724
31.3%
Standard error 4.77 points
▾
252+ Atk Corviknight Iron Head vs. 252 HP / 0 Def Kyurem: 240-284 (52.8 - 62.5%) -- 99.6% chance to 2HKO after Leftovers recovery
28
Ogerpon-Wellspring
GrassWater
SOFT CHECK
View matchup
245.577
30.0%
Standard error 4.80 points
▾
252+ Atk Wellspring Mask Ogerpon-Wellspring Superpower vs. 252 HP / 0 Def Kyurem: 356-420 (78.4 - 92.5%) -- guaranteed 2HKO after Leftovers recovery
29
Great Tusk
GroundFighting
SOFT CHECK
View matchup
157.571
33.7%
Standard error 6.06 points
▾
252+ Atk Great Tusk Close Combat vs. 252 HP / 0 Def Kyurem: 474-560 (104.4 - 123.3%) -- guaranteed OHKO
30
Ferrothorn
GrassSteel
SOFT CHECK
View matchup
141.642
35.9%
Standard error 6.85 points
▾
0 Def Ferrothorn Body Press vs. 252 HP / 0 Def Kyurem: 158-188 (34.8 - 41.4%) -- 72.5% chance to 3HKO after Leftovers recovery
Ranked #18 with 9.55% usage. Sorted by conservative score.