Is Keldeo viable in Gen 5 OU?

Keldeo is ranked #5 in Gen 5 OU with 27.50% usage according to Smogon Jul 2026 - Sep 2026 data.

What beats Keldeo in Gen 5 OU?

Latios has the strongest conservative score in this observed Jul 2026 - Sep 2026 sample. The target was knocked out or switched out in 65.6% of 156.52029609238633 relevant encounters. Standard error is 3.8 points. Sets and switch conditions can change the result.

How are Keldeo matchup checks ranked in Gen 5 OU?

They are ranked by p minus four standard errors. Here, p is the observed fraction of relevant encounters where Keldeo was knocked out or switched out. This is not a set-specific battle guarantee.

Keldeo counters

Gen 5 OU · Smogon source period Jul 2026 - Sep 2026

#0647 Keldeo

WaterFighting

USAGE 27.5% #5

ABILITYJustified

BASE STATS

HP 91

ATK 72

DEF 90

SPA 129

SPD 90

SPE 108

BST580

TYPE MATCHUPS

2×

ElectricGrassFlyingPsychicFairy

½×

FireWaterIceBugRockDarkSteel

Moves

Secret Sword 98.1% Hydro Pump 76.6% Surf 60.3% Hidden Power Ghost 37.2% Scald 28.2% Hidden Power Grass 27.3% Hidden Power Ice 20.2% Calm Mind 10.2%

Items

Choice Specs 51.5% Leftovers 23.1% Choice Scarf 18.7% Expert Belt 2.1% Salac Berry 1.0% Payapa Berry 1.0% Mystic Water 0.8% Air Balloon 0.5%

Abilities

Justified100.0%

Common Teammates

Ferrothorn66.7%

Politoed66.0%

Thundurus-Therian60.3%

Tentacruel37.3%

Landorus-Therian36.3%

Latios34.5%

Tyranitar23.2%

Jirachi21.3%

Browse Gen 5 OU teams using Keldeo →

Explore Keldeo + Latios teams 50 score Explore Keldeo + Alakazam teams 37 score Explore Keldeo + Starmie teams 31 score Explore Keldeo + Landorus-Therian teams -1 score Explore Keldeo + Tyranitar teams -8 score Explore Keldeo + Garchomp teams -11 score

Leading observed checks

Open a matchup for a separate set-based damage estimate, or browse uploaded teams with both Pokémon.

Team core to explore

Keldeo + Ferrothorn 66.7% teammate usage Explore teams →

Checks & Counters

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

Latios

DragonPsychic OFFENSIVE CHECK View matchup

156.52

50.4

65.6% Standard error 3.80 points

DAMAGE CALC

252+ SpA Choice Specs Latios Psyshock vs. 252 HP / 0 Def Keldeo: 470-554 (121.7 - 143.5%) -- guaranteed OHKO

View Latios counters → Teams with Latios →

Alakazam

Psychic OFFENSIVE CHECK View matchup

20.995

36.7

74.7% Standard error 9.49 points

DAMAGE CALC

252+ SpA Alakazam Psyshock vs. 252 HP / 0 Def Keldeo: 324-384 (83.9 - 99.4%) -- guaranteed 2HKO

View Alakazam counters → Teams with Alakazam →

Starmie

WaterPsychic OFFENSIVE CHECK View matchup

29.348

30.7

65.8% Standard error 8.76 points

DAMAGE CALC

0- SpA Starmie Psychic vs. 252 HP / 252+ SpD Keldeo: 134-162 (34.7 - 41.9%) -- guaranteed 3HKO

View Starmie counters → Teams with Starmie →

Landorus-Therian

GroundFlying SOFT CHECK View matchup

76.026

-0.8

16.1% Standard error 4.22 points

DAMAGE CALC

252+ Atk Landorus-Therian Explosion vs. 252 HP / 0 Def Keldeo: 354-417 (91.7 - 108%) -- 50% chance to OHKO

View Landorus-Therian counters → Teams with Landorus-Therian →

Tyranitar

RockDark SOFT CHECK View matchup

41.648

-8.4

11.1% Standard error 4.88 points

DAMAGE CALCSand

252+ Atk Tyranitar Superpower vs. 252 HP / 0 Def Keldeo: 161-190 (41.7 - 49.2%) -- 83.6% chance to 2HKO after sandstorm damage

View Tyranitar counters → Teams with Tyranitar →

Garchomp

DragonGround SOFT CHECK View matchup

23.318

-10.9

25.0% Standard error 8.97 points

DAMAGE CALC

252+ Atk Garchomp Outrage vs. 252 HP / 0 Def Keldeo: 235-277 (60.8 - 71.7%) -- guaranteed 2HKO

View Garchomp counters → Teams with Garchomp →

Ranked #5 with 27.50% usage. Sorted by conservative score.