Is Rotom-Wash viable in Gen 6 OU?

Rotom-Wash is ranked #13 in Gen 6 OU with 14.44% usage according to Smogon May 2026 - Jul 2026 data.

What beats Rotom-Wash in Gen 6 OU?

Serperior has the strongest conservative score in this observed May 2026 - Jul 2026 sample. The target was knocked out or switched out in 90.3% of 62.561818930270036 relevant encounters. Standard error is 5.1 points. Sets and switch conditions can change the result.

How are Rotom-Wash matchup checks ranked in Gen 6 OU?

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

Rotom-Wash counters

Gen 6 OU · Sorted by p − 4 standard errors · Smogon source period May 2026 - Jul 2026 · Generated 2026-08-05

#0479 Rotom-Wash

ElectricWater

USAGE 14.4% #13

BASE STATS

HP 50

ATK 65

DEF 107

SPA 105

SPD 107

SPE 86

BST520

TYPE MATCHUPS

2×

GrassGround

½×

FireWaterIceFlying

¼×

Steel

Moves

Hydro Pump 99.9% Volt Switch 99.9% Pain Split 79.8% Will-O-Wisp 74.3% Thunder Wave 19.9% Trick 14.1% Hidden Power Grass 9.3% Hidden Power Fire 0.8%

Items

Leftovers 84.9% Choice Scarf 13.4% Choice Specs 0.8% Rocky Helmet 0.3% Rindo Berry 0.2% Sitrus Berry 0.2% Chesto Berry 0.1% Mystic Water 0.1%

Common Teammates

Clefable47.5%

Tornadus-Therian38.9%

Landorus-Therian38.4%

Browse Gen 6 OU teams using Rotom-Wash →

Explore Rotom-Wash + Serperior teams 70 score Explore Rotom-Wash + Clefable teams 47 score Explore Rotom-Wash + Ferrothorn teams 40 score Explore Rotom-Wash + Keldeo teams 34 score Explore Rotom-Wash + Gastrodon teams 14 score Explore Rotom-Wash + Excadrill teams 13 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

Rotom-Wash + Clefable 47.5% 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

Serperior

Grass DEFENSIVE CHECK View matchup

62.562

69.8

90.3% Standard error 5.11 points

DAMAGE CALC

252+ SpA Rotom-Wash Hidden Power Fire vs. 252 HP / 252+ SpD Serperior: 92-110 (25.9 - 31%) -- guaranteed 4HKO

View Serperior counters → Teams with Serperior →

Clefable

Fairy DEFENSIVE CHECK View matchup

110.761

46.9

75.1% Standard error 7.05 points

DAMAGE CALC

252+ SpA Rotom-Wash Hydro Pump vs. 252 HP / 252+ SpD Clefable: 132-156 (33.5 - 39.5%) -- 17.3% chance to 3HKO after Leftovers recovery

View Clefable counters → Teams with Clefable →

Ferrothorn

GrassSteel DEFENSIVE CHECK View matchup

27.886

40.5

73.8% Standard error 8.33 points

DAMAGE CALC

252+ SpA Rotom-Wash Hidden Power Fire vs. 252 HP / 252+ SpD Ferrothorn: 160-192 (45.4 - 54.5%) -- 5.1% chance to 2HKO after Leftovers recovery

View Ferrothorn counters → Teams with Ferrothorn →

Keldeo

WaterFighting OFFENSIVE CHECK View matchup

22.306

33.5

71.7% Standard error 9.54 points

DAMAGE CALC

252+ SpA Choice Specs Keldeo Focus Blast vs. 252 HP / 252+ SpD Rotom-Wash: 220-261 (72.3 - 85.8%) -- guaranteed 2HKO after Leftovers recovery

View Keldeo counters → Teams with Keldeo →

Gastrodon

WaterGround DEFENSIVE CHECK View matchup

21.338

14.4

57.2% Standard error 10.71 points

DAMAGE CALC

252+ SpA Rotom-Wash Hidden Power Grass vs. 252 HP / 252+ SpD Gastrodon: 204-244 (47.8 - 57.2%) -- 44.1% chance to 2HKO after Leftovers recovery

View Gastrodon counters → Teams with Gastrodon →

Excadrill

GroundSteel SOFT CHECK View matchup

126.993

12.6

42.5% Standard error 7.48 points

DAMAGE CALC

252+ Atk Mold Breaker Excadrill Earthquake vs. 252 HP / 0 Def Rotom-Wash: 350-414 (115.1 - 136.1%) -- guaranteed OHKO

View Excadrill counters → Teams with Excadrill →

Garchomp

DragonGround SOFT CHECK View matchup

25.517

5.4

44.8% Standard error 9.84 points

DAMAGE CALC

252+ Atk Garchomp Outrage vs. 252 HP / 0 Def Rotom-Wash: 204-240 (67.1 - 78.9%) -- guaranteed 2HKO after Leftovers recovery

View Garchomp counters → Teams with Garchomp →

Volcanion

FireWater SOFT CHECK View matchup

25.173

0.6

39.5% Standard error 9.74 points

DAMAGE CALC

252+ SpA Volcanion Hidden Power Grass vs. 252 HP / 252+ SpD Rotom-Wash: 100-118 (32.8 - 38.8%) -- 4.8% chance to 3HKO after Leftovers recovery

View Volcanion counters → Teams with Volcanion →

Zapdos

ElectricFlying SOFT CHECK View matchup

22.391

-2.8

38.2% Standard error 10.27 points

DAMAGE CALC

252+ SpA Zapdos Thunderbolt vs. 252 HP / 252+ SpD Rotom-Wash: 109-129 (35.8 - 42.4%) -- 88.7% chance to 3HKO after Leftovers recovery

View Zapdos counters → Teams with Zapdos →

Tornadus-Therian

Flying SOFT CHECK View matchup

32.522

-4.8

25.9% Standard error 7.68 points

DAMAGE CALC

252+ Atk Tornadus-Therian Superpower vs. 252 HP / 0 Def Rotom-Wash: 113-134 (37.1 - 44%) -- 99.9% chance to 3HKO after Leftovers recovery

View Tornadus-Therian counters → Teams with Tornadus-Therian →

Slowbro

WaterPsychic SOFT CHECK View matchup

21.313

-8.0

32.6% Standard error 10.16 points

DAMAGE CALC

252+ SpA Slowbro Future Sight vs. 252 HP / 252+ SpD Rotom-Wash: 124-147 (40.7 - 48.3%) -- guaranteed 3HKO after Leftovers recovery

View Slowbro counters → Teams with Slowbro →

Landorus-Therian

GroundFlying SOFT CHECK View matchup

30.144

-10.5

4.3% Standard error 3.70 points

DAMAGE CALC

252+ Atk Landorus-Therian Explosion vs. 252 HP / 0 Def Rotom-Wash: 306-360 (100.6 - 118.4%) -- guaranteed OHKO

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

Skarmory

SteelFlying SOFT CHECK View matchup

22.438

-15.4

12.1% Standard error 6.87 points

DAMAGE CALC

252+ Atk Skarmory Brave Bird vs. 252 HP / 0 Def Rotom-Wash: 73-87 (24 - 28.6%) -- possible 5HKO

View Skarmory counters → Teams with Skarmory →

Ranked #13 with 14.44% usage. Sorted by conservative score.