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
Zamazenta
Fighting
OFFENSIVE CHECK
View matchup
219.457
73.5%
Standard error 5.14 points
▾
252+ Atk Zamazenta Close Combat vs. 252 HP / 0 Def Ogerpon-Wellspring: 235-277 (64.5 - 76%) -- guaranteed 2HKO
02
Ogerpon
Grass
OFFENSIVE CHECK
View matchup
49.146
74.0%
Standard error 6.25 points
▾
252+ Atk Ogerpon Ivy Cudgel vs. 252 HP / 0 Def Ogerpon-Wellspring: 196-232 (53.8 - 63.7%) -- guaranteed 2HKO
03
Dragonite
DragonFlying
OFFENSIVE CHECK
View matchup
172.847
68.9%
Standard error 6.08 points
▾
252+ Atk Dragonite Dragon Tail vs. 252 HP / 0 Def Ogerpon-Wellspring: 127-151 (34.8 - 41.4%) -- guaranteed 3HKO
04
Kingambit
DarkSteel
DEFENSIVE CHECK
View matchup
106.189
67.8%
Standard error 7.83 points
▾
252+ Atk Wellspring Mask Ogerpon-Wellspring Ivy Cudgel vs. 252 HP / 252+ Def Kingambit: 129-153 (31.9 - 37.8%) -- 0.2% chance to 3HKO after Leftovers recovery
05
Kyurem
DragonIce
OFFENSIVE CHECK
View matchup
124.114
60.2%
Standard error 7.58 points
▾
252+ SpA Kyurem Freeze-Dry vs. 252 HP / 252+ SpD Ogerpon-Wellspring: 372-444 (102.1 - 121.9%) -- guaranteed OHKO
06
Pecharunt
PoisonGhost
DEFENSIVE CHECK
View matchup
116.398
57.3%
Standard error 7.91 points
▾
252+ Atk Wellspring Mask Ogerpon-Wellspring Knock Off (97.5 BP) vs. 252 HP / 252+ Def Pecharunt: 136-162 (35.7 - 42.6%) -- guaranteed 3HKO
07
Raging Bolt
ElectricDragon
OFFENSIVE CHECK
View matchup
93.047
59.3%
Standard error 8.78 points
▾
252+ SpA Raging Bolt Draco Meteor vs. 252 HP / 252+ SpD Ogerpon-Wellspring: 178-211 (48.9 - 57.9%) -- 97.7% chance to 2HKO
08
Dragapult
DragonGhost
SOFT CHECK
View matchup
129.596
53.6%
Standard error 7.56 points
▾
252+ Atk Dragapult Dragon Darts (2 hits) vs. 252 HP / 0 Def Ogerpon-Wellspring: 198-234 (54.3 - 64.2%) -- guaranteed 2HKO
09
Rillaboom
Grass
OFFENSIVE CHECK
View matchup
26.135
59.0%
Standard error 9.62 points
▾
252+ Atk Life Orb Rillaboom Wood Hammer vs. 252 HP / 0 Def Ogerpon-Wellspring in Grassy Terrain: 409-484 (112.3 - 132.9%) -- guaranteed OHKO
10
Toxapex
PoisonWater
SOFT CHECK
View matchup
105.878
53.1%
Standard error 8.19 points
▾
0- Atk Toxapex Poison Jab vs. 252 HP / 0 Def Ogerpon-Wellspring: 122-146 (33.5 - 40.1%) -- guaranteed 3HKO
11
Ogerpon-Wellspring
GrassWater
SOFT CHECK
View matchup
158.197
43.0%
Standard error 6.78 points
▾
252+ Atk Wellspring Mask Ogerpon-Wellspring Power Whip vs. 252 HP / 0 Def Ogerpon-Wellspring: 282-333 (77.4 - 91.4%) -- guaranteed 2HKO
12
Iron Valiant
FairyFighting
SOFT CHECK
View matchup
21.784
52.7%
Standard error 10.70 points
▾
0- Atk Iron Valiant Close Combat vs. 252 HP / 0 Def Ogerpon-Wellspring: 169-199 (46.4 - 54.6%) -- 62.9% chance to 2HKO
13
Gholdengo
SteelGhost
SOFT CHECK
View matchup
139.144
36.1%
Standard error 7.03 points
▾
252+ SpA Gholdengo Psyshock vs. 252 HP / 0 Def Ogerpon-Wellspring: 113-134 (31 - 36.8%) -- 72.1% chance to 3HKO
14
Dondozo
Water
SOFT CHECK
View matchup
27.598
45.3%
Standard error 9.48 points
▾
252+ Atk Dondozo Crunch vs. 252 HP / 0 Def Ogerpon-Wellspring: 93-110 (25.5 - 30.2%) -- guaranteed 4HKO
15
Great Tusk
GroundFighting
SOFT CHECK
View matchup
185.833
26.0%
Standard error 5.54 points
▾
252+ Atk Great Tusk Close Combat vs. 252 HP / 0 Def Ogerpon-Wellspring: 252-297 (69.2 - 81.5%) -- guaranteed 2HKO
16
Gliscor
GroundFlying
SOFT CHECK
View matchup
195.326
21.2%
Standard error 5.03 points
▾
252+ Atk Gliscor Earthquake vs. 252 HP / 0 Def Ogerpon-Wellspring: 84-99 (23 - 27.1%) -- 50.3% chance to 4HKO
17
Walking Wake
WaterDragon
SOFT CHECK
View matchup
25.247
38.6%
Standard error 9.69 points
▾
252+ SpA Choice Specs Walking Wake Draco Meteor vs. 252 HP / 252+ SpD Ogerpon-Wellspring: 250-295 (68.6 - 81%) -- guaranteed 2HKO
18
Corviknight
FlyingSteel
SOFT CHECK
View matchup
112.38
21.8%
Standard error 6.57 points
▾
252+ Atk Corviknight Brave Bird vs. 252 HP / 0 Def Ogerpon-Wellspring: 380-450 (104.3 - 123.6%) -- guaranteed OHKO
19
Slowking-Galar
PoisonPsychic
SOFT CHECK
View matchup
29.208
24.9%
Standard error 8.00 points
▾
252+ SpA Slowking-Galar Sludge Bomb vs. 252 HP / 252+ SpD Ogerpon-Wellspring: 212-252 (58.2 - 69.2%) -- guaranteed 2HKO
20
Ting-Lu
DarkGround
SOFT CHECK
View matchup
150.116
6.8%
Standard error 3.48 points
▾
252+ Atk Ting-Lu Payback (100 BP) vs. 252 HP / 0 Def Ogerpon-Wellspring: 186-219 (51 - 60.1%) -- guaranteed 2HKO
21
Samurott-Hisui
WaterDark
SOFT CHECK
View matchup
89.448
23.1%
Standard error 7.70 points
▾
252+ Atk Sharpness Samurott-Hisui Ceaseless Edge vs. 252 HP / 0 Def Ogerpon-Wellspring: 178-210 (48.9 - 57.6%) -- 95.7% chance to 2HKO
22
Cinderace
Fire
SOFT CHECK
View matchup
42.673
30.0%
Standard error 9.67 points
▾
252+ Atk Cinderace Gunk Shot vs. 252 HP / 0 Def Ogerpon-Wellspring: 306-362 (84 - 99.4%) -- guaranteed 2HKO
23
Cresselia
Psychic
SOFT CHECK
View matchup
49.319
24.2%
Standard error 8.47 points
▾
252+ SpA Cresselia Moonblast vs. 252 HP / 252+ SpD Ogerpon-Wellspring: 59-70 (16.2 - 19.2%) -- possible 6HKO
24
Clefable
Fairy
SOFT CHECK
View matchup
45.421
25.8%
Standard error 9.17 points
▾
252+ SpA Clefable Moonblast vs. 252 HP / 252+ SpD Ogerpon-Wellspring: 102-121 (28 - 33.2%) -- guaranteed 4HKO
25
Iron Treads
GroundSteel
SOFT CHECK
View matchup
63.68
10.3%
Standard error 5.39 points
▾
252+ Atk Iron Treads Supercell Slam vs. 252 HP / 0 Def Ogerpon-Wellspring: 125-148 (34.3 - 40.6%) -- guaranteed 3HKO
26
Landorus-Therian
GroundFlying
SOFT CHECK
View matchup
90.446
7.3%
Standard error 4.75 points
▾
252+ Atk Landorus-Therian U-turn vs. 252 HP / 0 Def Ogerpon-Wellspring: 212-250 (58.2 - 68.6%) -- guaranteed 2HKO
27
Alomomola
Water
SOFT CHECK
View matchup
55.3
8.1%
Standard error 5.06 points
▾
252+ Atk Alomomola Body Slam vs. 252 HP / 0 Def Ogerpon-Wellspring: 82-97 (22.5 - 26.6%) -- 28.2% chance to 4HKO
28
Glimmora
RockPoison
SOFT CHECK
View matchup
50.115
18.3%
Standard error 7.66 points
▾
252+ SpA Glimmora Sludge Wave vs. 252 HP / 252+ SpD Ogerpon-Wellspring: 254-300 (69.7 - 82.4%) -- guaranteed 2HKO
29
Blissey
Normal
SOFT CHECK
View matchup
47.974
11.5%
Standard error 6.48 points
▾
Blissey Seismic Toss vs. 252 HP Ogerpon-Wellspring: 100-100 (27.4 - 27.4%) -- guaranteed 4HKO
Ranked #7 with 17.71% usage. Sorted by conservative score.