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
Gholdengo
SteelGhost
OFFENSIVE CHECK
View matchup
171.365
81.1%
Standard error 2.99 points
▾
252+ SpA Gholdengo Make It Rain vs. 252 HP / 252+ SpD Hatterene: 308-366 (96.8 - 115%) -- 87.5% chance to OHKO
02
Kingambit
DarkSteel
DEFENSIVE CHECK
View matchup
131.506
82.4%
Standard error 3.32 points
▾
252+ SpA Hatterene Mystical Fire vs. 252 HP / 252+ SpD Kingambit: 150-178 (37.1 - 44%) -- guaranteed 3HKO
03
Charizard-Mega-Y
FireFlying
OFFENSIVE CHECK
View matchup
50.2
83.3%
Standard error 5.26 points
▾
252+ SpA Charizard-Mega-Y Overheat vs. 252 HP / 252+ SpD Hatterene in Sun: 288-339 (90.5 - 106.6%) -- 43.8% chance to OHKO
04
Melmetal
Steel
DEFENSIVE CHECK
View matchup
58.916
82.0%
Standard error 5.01 points
▾
252+ SpA Hatterene Mystical Fire vs. 252 HP / 252+ SpD Melmetal: 176-208 (37.1 - 43.8%) -- guaranteed 3HKO
05
Heatran
FireSteel
OFFENSIVE CHECK
View matchup
20.951
86.1%
Standard error 7.55 points
▾
252+ SpA Heatran Flash Cannon vs. 252 HP / 252+ SpD Hatterene: 204-242 (64.1 - 76.1%) -- guaranteed 2HKO after Leftovers recovery
06
Ogerpon-Wellspring
GrassWater
OFFENSIVE CHECK
View matchup
84.791
68.4%
Standard error 5.05 points
▾
252+ Atk Wellspring Mask Ogerpon-Wellspring Power Whip vs. 252 HP / 0 Def Hatterene: 255-301 (80.1 - 94.6%) -- guaranteed 2HKO after Leftovers recovery
07
Terapagos
Normal
DEFENSIVE CHECK
View matchup
90.105
65.4%
Standard error 5.01 points
▾
252+ SpA Hatterene Psychic Noise vs. 252 HP / 252+ SpD Terapagos: 112-133 (29.1 - 34.6%) -- 7.6% chance to 3HKO
08
Diancie-Mega
RockFairy
OFFENSIVE CHECK
View matchup
47.479
71.2%
Standard error 6.57 points
▾
0- Atk Diancie-Mega Diamond Storm vs. 252 HP / 0 Def Hatterene: 153-180 (48.1 - 56.6%) -- 34.4% chance to 2HKO after Leftovers recovery
09
Charizard-Mega-X
FireDragon
OFFENSIVE CHECK
View matchup
53.127
65.2%
Standard error 6.53 points
▾
252+ Atk Tough Claws Charizard-Mega-X Flare Blitz vs. 252 HP / 0 Def Hatterene: 292-345 (91.8 - 108.4%) -- 50% chance to OHKO
10
Gliscor
GroundFlying
SOFT CHECK
View matchup
258.563
50.2%
Standard error 3.11 points
▾
252+ Atk Gliscor Earthquake vs. 252 HP / 0 Def Hatterene: 151-178 (47.4 - 55.9%) -- 25.8% chance to 2HKO after Leftovers recovery
11
Tapu Lele
PsychicFairy
OFFENSIVE CHECK
View matchup
35.041
64.8%
Standard error 8.07 points
▾
252+ SpA Tapu Lele Moonblast vs. 252 HP / 252+ SpD Hatterene: 120-142 (37.7 - 44.6%) -- guaranteed 3HKO after Leftovers recovery
12
Landorus-Therian
GroundFlying
SOFT CHECK
View matchup
150.955
48.1%
Standard error 4.07 points
▾
252+ Atk Landorus-Therian Earthquake vs. 252 HP / 0 Def Hatterene: 204-240 (64.1 - 75.4%) -- guaranteed 2HKO after Leftovers recovery
13
Iron Treads
GroundSteel
SOFT CHECK
View matchup
102.026
50.6%
Standard error 4.95 points
▾
252+ Atk Iron Treads Earthquake vs. 252 HP / 0 Def Hatterene: 169-199 (53.1 - 62.5%) -- guaranteed 2HKO after Leftovers recovery
14
Corviknight
FlyingSteel
SOFT CHECK
View matchup
169.422
45.8%
Standard error 3.83 points
▾
252+ Atk Corviknight Iron Head vs. 252 HP / 0 Def Hatterene: 230-272 (72.3 - 85.5%) -- guaranteed 2HKO after Leftovers recovery
15
Excadrill
GroundSteel
OFFENSIVE CHECK
View matchup
31.071
63.9%
Standard error 8.62 points
▾
252+ Atk Mold Breaker Excadrill Iron Head vs. 252 HP / 0 Def Hatterene: 308-366 (96.8 - 115%) -- 87.5% chance to OHKO
16
Slowking-Galar
PoisonPsychic
SOFT CHECK
View matchup
82.309
51.3%
Standard error 5.51 points
▾
252+ SpA Slowking-Galar Sludge Wave vs. 252 HP / 252+ SpD Hatterene: 216-254 (67.9 - 79.8%) -- guaranteed 2HKO after Leftovers recovery
17
Garchomp
DragonGround
SOFT CHECK
View matchup
114.754
47.0%
Standard error 4.66 points
▾
252+ Atk Garchomp Earthquake vs. 252 HP / 0 Def Hatterene: 187-222 (58.8 - 69.8%) -- guaranteed 2HKO after Leftovers recovery
18
Dragonite
DragonFlying
SOFT CHECK
View matchup
77.793
50.7%
Standard error 5.67 points
▾
252+ Atk Dragonite Fly vs. 252 HP / 0 Def Hatterene: 172-204 (54 - 64.1%) -- guaranteed 2HKO after Leftovers recovery
19
Kyurem
DragonIce
SOFT CHECK
View matchup
65.309
48.3%
Standard error 6.18 points
▾
252+ SpA Kyurem Ice Beam vs. 252 HP / 252+ SpD Hatterene: 114-135 (35.8 - 42.4%) -- 93.5% chance to 3HKO after Leftovers recovery
20
Raging Bolt
ElectricDragon
SOFT CHECK
View matchup
76.253
45.2%
Standard error 5.70 points
▾
252+ SpA Choice Specs Raging Bolt Thunderbolt vs. 252 HP / 252+ SpD Hatterene: 178-210 (55.9 - 66%) -- guaranteed 2HKO after Leftovers recovery
21
Blissey
Normal
SOFT CHECK
View matchup
46.863
46.9%
Standard error 7.29 points
▾
Blissey Seismic Toss vs. 252 HP Hatterene: 100-100 (31.4 - 31.4%) -- guaranteed 4HKO after Leftovers recovery
22
Lopunny-Mega
NormalFighting
SOFT CHECK
View matchup
51.605
45.3%
Standard error 6.93 points
▾
252+ Atk Lopunny-Mega Return vs. 252 HP / 0 Def Hatterene: 198-234 (62.2 - 73.5%) -- guaranteed 2HKO after Leftovers recovery
23
Urshifu-Rapid-Strike
FightingWater
SOFT CHECK
View matchup
47.848
45.1%
Standard error 7.19 points
▾
252+ Atk Urshifu-Rapid-Strike Surging Strikes (3 hits) vs. 252 HP / 0 Def Hatterene on a critical hit: 216-255 (67.9 - 80.1%) -- guaranteed 2HKO after Leftovers recovery
24
Ting-Lu
DarkGround
SOFT CHECK
View matchup
114.431
33.5%
Standard error 4.41 points
▾
252+ Atk Ting-Lu Earthquake vs. 252 HP / 0 Def Hatterene: 168-198 (52.8 - 62.2%) -- 99.6% chance to 2HKO after Leftovers recovery
25
Zamazenta
Fighting
SOFT CHECK
View matchup
127.913
32.3%
Standard error 4.13 points
▾
252+ Atk Zamazenta Heavy Slam (120 BP) vs. 252 HP / 0 Def Hatterene: 282-334 (88.6 - 105%) -- 31.3% chance to OHKO
26
Tyranitar-Mega
RockDark
DEFENSIVE CHECK
View matchup
23.847
56.3%
Standard error 10.16 points
▾
252+ SpA Hatterene Draining Kiss vs. 252 HP / 252+ SpD Tyranitar-Mega in Sand: 80-96 (19.8 - 23.7%) -- possible 5HKO
27
Clefable
Fairy
DEFENSIVE CHECK
View matchup
21.097
57.2%
Standard error 10.77 points
▾
252+ SpA Hatterene Psychic Noise vs. 252 HP / 252+ SpD Clefable: 109-129 (27.6 - 32.7%) -- guaranteed 4HKO
28
Iron Valiant
FairyFighting
SOFT CHECK
View matchup
45.761
42.8%
Standard error 7.31 points
▾
252+ SpA Iron Valiant Shadow Ball vs. 252 HP / 252+ SpD Hatterene: 128-152 (40.2 - 47.7%) -- guaranteed 3HKO after Leftovers recovery
29
Scizor-Mega
BugSteel
SOFT CHECK
View matchup
22.447
53.7%
Standard error 10.52 points
▾
252+ Atk Technician Scizor-Mega Bullet Punch vs. 252 HP / 0 Def Hatterene: 252-296 (79.2 - 93%) -- guaranteed 2HKO after Leftovers recovery
30
Great Tusk
GroundFighting
SOFT CHECK
View matchup
116.765
27.5%
Standard error 4.13 points
▾
252+ Atk Great Tusk Headlong Rush vs. 252 HP / 0 Def Hatterene: 228-268 (71.6 - 84.2%) -- guaranteed 2HKO after Leftovers recovery
Ranked #20 with 9.10% usage. Sorted by conservative score.