Reliability ranks observed matchups; KO rate is how often the checker knocked out or forced out the target. “Checker faints” reports the checker's own observed death rate. Categories use matchup reliability plus offensive and defensive base stats.
How to read this table
Use encounter count to judge sample size. A high-reliability check with a modest KO rate can still be useful when it consistently forces switches or limits the target.
#
Checker
Encounters
Reliability
KO Rate
01
Zamazenta
Fighting
OFFENSIVE CHECK
198.512
75.3%
checker faints 5.25%
▾
252+ Atk Zamazenta Close Combat vs. 252 HP / 0 Def Ogerpon-Wellspring: 235-277 (64.5 - 76%) -- guaranteed 2HKO
02
Dragonite
DragonFlying
OFFENSIVE CHECK
166.644
70.4%
checker faints 6.09%
▾
252+ Atk Dragonite Dragon Tail vs. 252 HP / 0 Def Ogerpon-Wellspring: 127-151 (34.8 - 41.4%) -- guaranteed 3HKO
03
Kingambit
DarkSteel
DEFENSIVE COUNTER
98.55
66.5%
checker faints 8.21%
▾
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
04
Raging Bolt
ElectricDragon
OFFENSIVE CHECK
80.484
62.1%
checker faints 9.28%
▾
252+ SpA Raging Bolt Draco Meteor vs. 252 HP / 252+ SpD Ogerpon-Wellspring: 178-211 (48.9 - 57.9%) -- 97.7% chance to 2HKO
05
Toxapex
PoisonWater
DEFENSIVE COUNTER
100.466
61.0%
checker faints 8.32%
▾
252+ Atk Wellspring Mask Ogerpon-Wellspring Power Whip vs. 252 HP / 252+ Def Toxapex: 130-154 (42.7 - 50.6%) -- 2% chance to 2HKO
06
Kyurem
DragonIce
OFFENSIVE CHECK
109.14
60.1%
checker faints 8.08%
▾
252+ SpA Kyurem Freeze-Dry vs. 252 HP / 252+ SpD Ogerpon-Wellspring: 372-444 (102.1 - 121.9%) -- guaranteed OHKO
07
Pecharunt
PoisonGhost
DEFENSIVE COUNTER
105.133
58.1%
checker faints 8.30%
▾
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
08
Iron Valiant
FairyFighting
SOFT CHECK
21.784
52.7%
checker faints 10.70%
▾
0- Atk Iron Valiant Close Combat vs. 252 HP / 0 Def Ogerpon-Wellspring: 169-199 (46.4 - 54.6%) -- 62.9% chance to 2HKO
09
Dragapult
DragonGhost
SOFT CHECK
123.406
52.2%
checker faints 7.75%
▾
252+ Atk Dragapult Dragon Darts (2 hits) vs. 252 HP / 0 Def Ogerpon-Wellspring: 198-234 (54.3 - 64.2%) -- guaranteed 2HKO
10
Ogerpon-Wellspring
GrassWater
SOFT CHECK
138.282
42.6%
checker faints 7.17%
▾
252+ Atk Wellspring Mask Ogerpon-Wellspring Power Whip vs. 252 HP / 0 Def Ogerpon-Wellspring: 282-333 (77.4 - 91.4%) -- guaranteed 2HKO
11
21.93
41.5%
checker faints 10.52%
▾
252+ Atk Dondozo Crunch vs. 252 HP / 0 Def Ogerpon-Wellspring: 93-110 (25.5 - 30.2%) -- guaranteed 4HKO
12
Gholdengo
SteelGhost
SOFT CHECK
125.855
38.9%
checker faints 7.52%
▾
252+ SpA Gholdengo Psyshock vs. 252 HP / 0 Def Ogerpon-Wellspring: 113-134 (31 - 36.8%) -- 72.1% chance to 3HKO
13
Walking Wake
WaterDragon
SOFT CHECK
25.247
38.6%
checker faints 9.69%
▾
252+ SpA Choice Specs Walking Wake Draco Meteor vs. 252 HP / 252+ SpD Ogerpon-Wellspring: 250-295 (68.6 - 81%) -- guaranteed 2HKO
14
Great Tusk
GroundFighting
SOFT CHECK
153.607
27.3%
checker faints 6.15%
▾
252+ Atk Great Tusk Close Combat vs. 252 HP / 0 Def Ogerpon-Wellspring: 252-297 (69.2 - 81.5%) -- guaranteed 2HKO
15
Clefable
Fairy
SOFT CHECK
45.421
25.8%
checker faints 9.17%
▾
252+ SpA Clefable Moonblast vs. 252 HP / 252+ SpD Ogerpon-Wellspring: 102-121 (28 - 33.2%) -- guaranteed 4HKO
16
Samurott-Hisui
WaterDark
SOFT CHECK
58.643
22.2%
checker faints 7.66%
▾
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
17
Cinderace
Fire
SOFT CHECK
20.05
20.7%
checker faints 9.06%
▾
252+ Atk Cinderace Gunk Shot vs. 252 HP / 0 Def Ogerpon-Wellspring: 306-362 (84 - 99.4%) -- guaranteed 2HKO
18
Corviknight
FlyingSteel
SOFT CHECK
99.939
20.5%
checker faints 6.85%
▾
252+ Atk Corviknight Brave Bird vs. 252 HP / 0 Def Ogerpon-Wellspring: 380-450 (104.3 - 123.6%) -- guaranteed OHKO
19
Glimmora
RockPoison
SOFT CHECK
28.251
20.4%
checker faints 7.59%
▾
252+ SpA Glimmora Sludge Wave vs. 252 HP / 252+ SpD Ogerpon-Wellspring: 254-300 (69.7 - 82.4%) -- guaranteed 2HKO
20
Gliscor
GroundFlying
SOFT CHECK
174.4
20.3%
checker faints 5.25%
▾
252+ Atk Gliscor Earthquake vs. 252 HP / 0 Def Ogerpon-Wellspring: 84-99 (23 - 27.1%) -- 50.3% chance to 4HKO
21
Cresselia
Psychic
SOFT CHECK
25.376
17.3%
checker faints 7.51%
▾
252+ SpA Cresselia Moonblast vs. 252 HP / 252+ SpD Ogerpon-Wellspring: 59-70 (16.2 - 19.2%) -- possible 6HKO
22
Blissey
Normal
SOFT CHECK
24.257
13.6%
checker faints 6.95%
▾
Blissey Seismic Toss vs. 252 HP Ogerpon-Wellspring: 100-100 (27.4 - 27.4%) -- guaranteed 4HKO
23
Iron Treads
GroundSteel
SOFT CHECK
28.665
10.1%
checker faints 5.62%
▾
252+ Atk Iron Treads Ice Spinner vs. 252 HP / 0 Def Ogerpon-Wellspring: 100-118 (27.4 - 32.4%) -- guaranteed 4HKO
24
Alomomola
Water
SOFT CHECK
75.689
7.1%
checker faints 4.92%
▾
252+ Atk Alomomola Body Slam vs. 252 HP / 0 Def Ogerpon-Wellspring: 82-97 (22.5 - 26.6%) -- 28.2% chance to 4HKO
25
Landorus-Therian
GroundFlying
SOFT CHECK
62.806
7.0%
checker faints 4.56%
▾
252+ Atk Landorus-Therian U-turn vs. 252 HP / 0 Def Ogerpon-Wellspring: 212-250 (58.2 - 68.6%) -- guaranteed 2HKO
26
Ting-Lu
DarkGround
SOFT CHECK
130.771
6.5%
checker faints 3.71%
▾
252+ Atk Ting-Lu Payback (100 BP) vs. 252 HP / 0 Def Ogerpon-Wellspring: 186-219 (51 - 60.1%) -- guaranteed 2HKO
Ranked #7 with 17.88% usage. Sorted by reliability score.