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
Arceus-Ghost
Ghost
DEFENSIVE COUNTER
25.101
94.3%
checker faints 4.64%
▾
252+ Atk Alomomola Flip Turn vs. 252 HP / 252+ Def Arceus-Ghost: 48-57 (10.8 - 12.8%) -- possible 8HKO
02
Zacian-Crowned
FairySteel
OFFENSIVE CHECK
306.924
88.7%
checker faints 3.11%
▾
+1 252+ Atk Zacian-Crowned Wild Charge vs. 252 HP / 0 Def Alomomola: 432-510 (80.8 - 95.5%) -- guaranteed 2HKO
03
Garganacl
Rock
DEFENSIVE COUNTER
52.568
87.2%
checker faints 6.49%
▾
252+ Atk Alomomola Flip Turn vs. 252 HP / 252+ Def Garganacl: 90-108 (22.2 - 26.7%) -- possible 5HKO
04
Kyurem-Black
DragonIce
OFFENSIVE CHECK
23.759
86.6%
checker faints 7.00%
▾
252+ Atk Kyurem-Black Fusion Bolt vs. 252 HP / 0 Def Alomomola: 352-416 (65.9 - 77.9%) -- guaranteed 2HKO
05
Giratina-Origin
GhostDragon
DEFENSIVE COUNTER
32.16
84.8%
checker faints 6.32%
▾
252+ Atk Alomomola Play Rough vs. 252 HP / 252+ Def Giratina-Origin: 108-128 (21.4 - 25.3%) -- 0.2% chance to 4HKO
06
Arceus-Ground
Ground
DEFENSIVE COUNTER
87.303
84.5%
checker faints 6.66%
▾
252+ Atk Alomomola Flip Turn vs. 252 HP / 252+ Def Arceus-Ground: 96-114 (21.6 - 25.6%) -- 0.3% chance to 4HKO
07
Lunala
PsychicGhost
OFFENSIVE CHECK
185.615
82.3%
checker faints 4.66%
▾
+1 252+ SpA Lunala Meteor Beam vs. 252 HP / 252+ SpD Alomomola: 255-301 (47.7 - 56.3%) -- 85.9% chance to 2HKO
08
Terapagos
Normal
DEFENSIVE COUNTER
22.557
82.2%
checker faints 8.05%
▾
252+ Atk Alomomola Flip Turn vs. 252 HP / 252+ Def Terapagos: 60-72 (15.6 - 18.7%) -- possible 6HKO
09
Necrozma-Dusk-Mane
PsychicSteel
OFFENSIVE CHECK
187.524
80.7%
checker faints 4.88%
▾
252+ SpA Necrozma-Dusk-Mane Photon Geyser vs. 252 HP / 252+ SpD Alomomola: 186-219 (34.8 - 41%) -- guaranteed 3HKO
10
Kingambit
DarkSteel
DEFENSIVE COUNTER
29.656
80.0%
checker faints 7.34%
▾
252+ Atk Alomomola Flip Turn vs. 252 HP / 252+ Def Kingambit: 48-57 (11.8 - 14.1%) -- possible 8HKO
11
Arceus-Water
Water
DEFENSIVE COUNTER
93.144
79.9%
checker faints 5.70%
▾
252+ Atk Alomomola Play Rough vs. 252 HP / 252+ Def Arceus-Water: 48-57 (10.8 - 12.8%) -- possible 8HKO
12
Eternatus
PoisonDragon
OFFENSIVE CHECK
212.117
79.6%
checker faints 4.38%
▾
+1 252+ SpA Eternatus Meteor Beam vs. 252 HP / 252+ SpD Alomomola: 266-313 (49.8 - 58.6%) -- 99.6% chance to 2HKO
13
Arceus-Fairy
Fairy
DEFENSIVE COUNTER
134.418
77.9%
checker faints 6.14%
▾
252+ Atk Alomomola Flip Turn vs. 252 HP / 252+ Def Arceus-Fairy: 48-57 (10.8 - 12.8%) -- possible 8HKO
14
Calyrex-Ice
PsychicIce
DEFENSIVE COUNTER
144.467
76.9%
checker faints 5.97%
▾
252+ Atk Alomomola Flip Turn vs. 252 HP / 252+ Def Calyrex-Ice: 42-49 (10.3 - 12.1%) -- possible 9HKO
15
Arceus
Normal
DEFENSIVE COUNTER
207.187
75.3%
checker faints 5.05%
▾
252+ Atk Alomomola Flip Turn vs. 252 HP / 252+ Def Arceus: 48-57 (10.8 - 12.8%) -- possible 8HKO
16
Kyogre
Water
DEFENSIVE COUNTER
476.807
74.0%
checker faints 3.45%
▾
252+ Atk Alomomola Play Rough vs. 252 HP / 252+ Def Kyogre: 58-69 (14.3 - 17%) -- possible 6HKO
17
Hatterene
PsychicFairy
OFFENSIVE CHECK
83.509
70.5%
checker faints 8.54%
▾
252+ SpA Hatterene Dazzling Gleam vs. 252 HP / 252+ SpD Alomomola: 169-201 (31.6 - 37.6%) -- 89.3% chance to 3HKO
18
Groudon
Ground
DEFENSIVE COUNTER
123.711
68.5%
checker faints 6.65%
▾
252+ Atk Alomomola Play Rough vs. 252 HP / 252+ Def Groudon: 43-51 (10.6 - 12.6%)
19
Gliscor
GroundFlying
DEFENSIVE COUNTER
224.365
62.7%
checker faints 5.48%
▾
0- SpA Alomomola Scald vs. 252 HP / 0 SpD Gliscor: 98-116 (27.6 - 32.7%) -- guaranteed 4HKO
20
Clodsire
PoisonGround
DEFENSIVE COUNTER
141.037
60.8%
checker faints 6.85%
▾
252+ Atk Alomomola Body Slam vs. 252 HP / 252+ Def Clodsire: 70-83 (15 - 17.8%) -- possible 6HKO
21
Koraidon
FightingDragon
OFFENSIVE CHECK
658.82
56.2%
checker faints 3.28%
▾
252+ Atk Orichalcum Pulse Koraidon Outrage vs. 252 HP / 0 Def Alomomola: 355-418 (66.4 - 78.2%) -- guaranteed 2HKO
22
Ho-Oh
FireFlying
SOFT CHECK
687.921
52.5%
checker faints 3.24%
▾
252+ Atk Ho-Oh Brave Bird vs. 252 HP / 0 Def Alomomola: 259-306 (48.5 - 57.3%) -- 91.8% chance to 2HKO
23
Blissey
Normal
SOFT CHECK
110.996
44.6%
checker faints 7.97%
▾
Blissey Seismic Toss vs. 252 HP Alomomola: 100-100 (18.7 - 18.7%) -- guaranteed 6HKO
24
Skeledirge
FireGhost
SOFT CHECK
82.519
36.1%
checker faints 6.71%
▾
252+ SpA Skeledirge Shadow Ball vs. 252 HP / 252+ SpD Alomomola: 145-172 (27.1 - 32.2%) -- guaranteed 4HKO
25
Landorus-Therian
GroundFlying
SOFT CHECK
84.225
35.6%
checker faints 8.87%
▾
252+ Atk Landorus-Therian Earthquake vs. 252 HP / 0 Def Alomomola: 235-277 (44 - 51.8%) -- 11.7% chance to 2HKO
26
28.052
29.4%
checker faints 8.61%
▾
Ditto vs. Alomomola: 0-0 (0 - 0%)
27
33.743
29.1%
checker faints 7.82%
▾
252+ Atk Dondozo Earthquake vs. 252 HP / 0 Def Alomomola: 120-142 (22.4 - 26.5%) -- 23.2% chance to 4HKO
28
Alomomola
Water
SOFT CHECK
84.29
26.4%
checker faints 8.31%
▾
252+ Atk Alomomola Play Rough vs. 252 HP / 0 Def Alomomola: 90-107 (16.8 - 20%) -- possible 5HKO
Ranked #36 with 3.42% usage. Sorted by reliability score.