Is there any point in EV training a Speed Boost Blaziken in Speed?

Question

I plan on using mine as a Physical Attacker (since it has an Adamant Nature) and it has its Hidden Ability Speed Boost. I don't know much about competitive playing/battling, but I was wondering if there is any point in EV-Training a Speed Boost Blaziken in Speed. Most people give out max evs to Blaziken's speed, since it's "okay-ish", but with Speed Boost, it would be able to outspeed faster opponents later on during the battle (unless it switches out), Although I would understand at least a little bit of EVs going into speed.

Answer 1

Yes.

Blaziken has a base speed of 80. That's pretty poor even in NU, and Speed Boost Blaziken is an Uber tier Pokemon.

So lets assume all your Pokemon & your opponent's have 31 IVs in speed.

Blaziken will be at 196 with no EVs. After 1 Speed Boost (x1.5), its speed will be 294.

However, with full speed EVs, its speed will be at 259. After 1 Speed Boost (x1.5), its speed will be at 388.5. That's enough to outspeed:
- Timid Gengar (350)
- Modest M-Gengar (359)
- Modest Mewtwo (359)
- Timid Darkrai (383)
- Timid Greninja (377)
- Timid Shaymin-Sky (388; speed tie)
- Jolly M-Lucario (355)

So yea. Speed EVs are definitely worthwhile on Blaziken, because it got base 70 defences which means your chances of getting another speed boost without attacking are slim.

Comments

I see.  So the EV spread of a Physical Attacking Blaziken with Speed Boost would be something like this:  4HP / 252 Atk / 252 Spd, right?

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Yep, that's the standard set most run.

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Can you outspeed A Mega Beedrill With Jolly Nature 252 Ev's In Speed And Attack With A Mega Blaziken At Lvl 100 With Adamant Nature 252 EV'S In Speed And Attack(With 1 Speed Boost)?

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It might do to ask that as a separate question, but yes +1 252 Speed Mega Blaziken is faster than unboosted Mega Beedrill.