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
Medicham-Mega
FightingPsychic
OFFENSIVE CHECK
20.93
87.2%
checker faints 7.31%
▾
252+ Atk Pure Power Medicham-Mega High Jump Kick vs. 252 HP / 0 Def Melmetal: 570-672 (120.2 - 141.7%) -- guaranteed OHKO
02
Charizard-Mega-Y
FireFlying
OFFENSIVE CHECK
105.102
83.3%
checker faints 6.10%
▾
252+ SpA Charizard-Mega-Y Overheat vs. 252 HP / 252+ SpD Melmetal in Sun: 764-902 (161.1 - 190.2%) -- guaranteed OHKO
03
Volcarona
BugFire
OFFENSIVE CHECK
131.402
78.7%
checker faints 5.94%
▾
252+ SpA Volcarona Flamethrower vs. 252 HP / 252+ SpD Melmetal: 312-368 (65.8 - 77.6%) -- guaranteed 2HKO
04
Heatran
FireSteel
OFFENSIVE CHECK
136.488
76.9%
checker faints 6.11%
▾
252+ SpA Heatran Eruption (150 BP) vs. 252 HP / 252+ SpD Melmetal: 506-596 (106.7 - 125.7%) -- guaranteed OHKO
05
Charizard-Mega-X
FireDragon
OFFENSIVE CHECK
27
75.3%
checker faints 8.30%
▾
252+ Atk Tough Claws Charizard-Mega-X Flare Blitz vs. 252 HP / 0 Def Melmetal: 410-486 (86.4 - 102.5%) -- 18.8% chance to OHKO
06
Zamazenta
Fighting
OFFENSIVE CHECK
239.603
74.0%
checker faints 4.88%
▾
252+ Atk Zamazenta Close Combat vs. 252 HP / 0 Def Melmetal: 300-354 (63.2 - 74.6%) -- guaranteed 2HKO
07
Ceruledge
FireGhost
OFFENSIVE CHECK
22.759
71.8%
checker faints 9.43%
▾
252+ Atk Ceruledge Bitter Blade vs. 252 HP / 0 Def Melmetal: 230-272 (48.5 - 57.3%) -- 94.1% chance to 2HKO
08
Ursaluna
GroundNormal
OFFENSIVE CHECK
117.081
67.8%
checker faints 7.37%
▾
252+ Atk Ursaluna Headlong Rush vs. 252 HP / 0 Def Melmetal: 336-396 (70.8 - 83.5%) -- guaranteed 2HKO
09
Volcanion
FireWater
DEFENSIVE COUNTER
21.001
66.8%
checker faints 10.28%
▾
252+ Atk Melmetal Earthquake vs. 252 HP / 252+ Def Volcanion: 164-194 (45 - 53.2%) -- 35.5% chance to 2HKO
10
Iron Hands
FightingElectric
DEFENSIVE COUNTER
48.414
65.9%
checker faints 6.81%
▾
252+ Atk Melmetal Earthquake vs. 252 HP / 252+ Def Iron Hands: 176-208 (34.3 - 40.6%) -- guaranteed 3HKO
11
Lopunny-Mega
NormalFighting
OFFENSIVE CHECK
31.556
64.5%
checker faints 8.52%
▾
252+ Atk Lopunny-Mega Close Combat vs. 252 HP / 0 Def Melmetal: 326-386 (68.7 - 81.4%) -- guaranteed 2HKO
12
Gholdengo
SteelGhost
OFFENSIVE CHECK
312.053
63.8%
checker faints 4.62%
▾
252+ SpA Gholdengo Focus Blast vs. 252 HP / 252+ SpD Melmetal: 276-326 (58.2 - 68.7%) -- guaranteed 2HKO
13
Great Tusk
GroundFighting
DEFENSIVE COUNTER
200.071
61.6%
checker faints 5.69%
▾
252+ Atk Punching Glove Iron Fist Melmetal Double Iron Bash (2 hits) vs. 252 HP / 252+ Def Great Tusk: 182-216 (41.9 - 49.7%) -- guaranteed 3HKO
14
Kingambit
DarkSteel
DEFENSIVE COUNTER
203.88
56.7%
checker faints 5.80%
▾
252+ Atk Melmetal Superpower vs. 252 HP / 252+ Def Kingambit: 392-464 (97 - 114.8%) -- 81.3% chance to OHKO
15
Iron Treads
GroundSteel
DEFENSIVE COUNTER
147.15
56.5%
checker faints 7.04%
▾
252+ Atk Melmetal Superpower vs. 252 HP / 252+ Def Iron Treads: 196-232 (51 - 60.4%) -- 89.5% chance to 2HKO after Leftovers recovery
16
Urshifu-Rapid-Strike
FightingWater
OFFENSIVE CHECK
136.107
56.5%
checker faints 7.30%
▾
252+ Atk Urshifu-Rapid-Strike Close Combat vs. 252 HP / 0 Def Melmetal: 318-374 (67 - 78.9%) -- guaranteed 2HKO
17
Iron Valiant
FairyFighting
OFFENSIVE CHECK
71.495
56.4%
checker faints 8.13%
▾
252+ Atk Iron Valiant Close Combat vs. 252 HP / 0 Def Melmetal: 318-374 (67 - 78.9%) -- guaranteed 2HKO
18
Dondozo
Water
DEFENSIVE COUNTER
36.089
55.4%
checker faints 8.27%
▾
252+ Atk Punching Glove Iron Fist Melmetal Thunder Punch vs. 252 HP / 252+ Def Dondozo: 168-198 (33.3 - 39.2%) -- 16.6% chance to 3HKO after Leftovers recovery
19
Cinderace
Fire
OFFENSIVE CHECK
20.051
55.3%
checker faints 11.10%
▾
252+ Atk Libero Cinderace High Jump Kick vs. 252 HP / 0 Def Melmetal: 318-374 (67 - 78.9%) -- guaranteed 2HKO
20
Rotom-Heat
ElectricFire
OFFENSIVE CHECK
49.923
55.0%
checker faints 9.78%
▾
252+ SpA Rotom-Heat Overheat vs. 252 HP / 252+ SpD Melmetal: 378-446 (79.7 - 94%) -- guaranteed 2HKO
21
Moltres
FireFlying
SOFT CHECK
69.879
54.6%
checker faints 8.37%
▾
252+ SpA Moltres Flamethrower vs. 252 HP / 252+ SpD Melmetal: 296-350 (62.4 - 73.8%) -- guaranteed 2HKO
22
Scizor-Mega
BugSteel
SOFT CHECK
172.278
52.7%
checker faints 6.54%
▾
252+ Atk Scizor-Mega Close Combat vs. 252 HP / 0 Def Melmetal: 236-278 (49.7 - 58.6%) -- 99.6% chance to 2HKO
23
Terapagos
Normal
SOFT CHECK
191.505
51.4%
checker faints 6.24%
▾
0- SpA Terapagos Flamethrower vs. 252 HP / 252+ SpD Melmetal: 78-92 (16.4 - 19.4%) -- possible 6HKO
24
Raging Bolt
ElectricDragon
SOFT CHECK
197.619
48.7%
checker faints 6.11%
▾
252+ SpA Choice Specs Raging Bolt Thunderbolt vs. 252 HP / 252+ SpD Melmetal: 237-280 (50 - 59%) -- guaranteed 2HKO
25
Garchomp
DragonGround
SOFT CHECK
130.128
47.9%
checker faints 7.54%
▾
252+ Atk Garchomp Earthquake vs. 252 HP / 0 Def Melmetal: 264-312 (55.6 - 65.8%) -- guaranteed 2HKO
26
Melmetal
Steel
SOFT CHECK
126.323
47.4%
checker faints 7.61%
▾
252+ Atk Melmetal Superpower vs. 252 HP / 0 Def Melmetal: 226-268 (47.6 - 56.5%) -- 85.9% chance to 2HKO
27
Tyranitar-Mega
RockDark
SOFT CHECK
53.133
44.5%
checker faints 9.50%
▾
252+ Atk Tyranitar-Mega Low Kick (120 BP) vs. 252 HP / 0 Def Melmetal: 250-296 (52.7 - 62.4%) -- guaranteed 2HKO
28
Zapdos
ElectricFlying
SOFT CHECK
280.146
43.9%
checker faints 5.11%
▾
252+ SpA Zapdos Heat Wave vs. 252 HP / 252+ SpD Melmetal: 208-246 (43.8 - 51.8%) -- 12.5% chance to 2HKO
29
Dragonite
DragonFlying
SOFT CHECK
166.634
42.7%
checker faints 6.50%
▾
252+ Atk Dragonite Earthquake vs. 252 HP / 0 Def Melmetal: 180-214 (37.9 - 45.1%) -- guaranteed 3HKO
30
Latios-Mega
DragonPsychic
SOFT CHECK
79.538
41.9%
checker faints 7.81%
▾
252+ SpA Latios-Mega Aura Sphere vs. 252 HP / 252+ SpD Melmetal: 212-250 (44.7 - 52.7%) -- 24.6% chance to 2HKO
Ranked #27 with 7.53% usage. Sorted by reliability score.