Eevee @ Eviolite
Ability: Adaptability
Level: 50
EVs: 252 HP / 92 Atk / 124 Def / 4 SpD / 36 Spe
Impish Nature
- Yawn
- Protect
- Last Resort
-
Yawn+Protect is really nice in 1v1 formats and Eevee does it easy vs Pikachu. This spread lives Z-Focus Punch + Feint from Pikachu so you can Yawn turn 1 and Protect to force the sleep. You can then OHKO with Last Resort. We found that Eevee that want to run Extreme Evoboost need 28 speed to outspeed Jolly Pikachu at +2, so this speed creeps those, with the rest of the EVs dumped into attack.
Eevee @ Eviolite
Ability: Adaptability
Level: 50
Shiny: Yes
EVs: 252 HP / 92 Atk / 124 Def / 4 SpD / 36 Spe
Impish Nature
- Yawn
- Protect
- Wish / Substitute
- Return / Double-Edge / Last Resort
Same set, but better in the Eevee matchup since Last Resort, with its low PP, can get stalled out by opposing SubProtect Eevee. Return doesn't OHKO Pikachu, Double-Edge gets close, Last Resort does kill though so it's an option still.
Eevee @ Eevium Z
Ability: Adaptability
Level: 50
EVs: 244 HP / 236 Def / 28 Spe
Impish Nature
- Last Resort
- Protect
(- Yawn
- Substitute / Return)
If you want to run Eevium then this is the EV spread you need, otherwise you just lose to Light Ball Volt Tackle Pikachu. Z-Focus Punch OHKOes this set, but you need to click Protect at some point anyway to be able to use regular Last Resort so might as well do it turn 1. Just pray the Pikachu gets a free Sub up that turn lol.