Need roughly 22 EV Speed (20 with 1 Carbos, 17 with 2 Carbos, 15 with 3), depending on the order of trainers

Heal to full before the fight (1-30 HP less than full is fine, and actually better if you have great Defense)

1. X Special

IF HERACROSS HIT ROCK TOMB TURN 1:
2. X Special
(If he doesn't hit you turn 2, set up a 3rd X Special and Dragon Claw Blastoise)
(If he hits you turn 2, you will be in Blaze unless you have great Defense AND get low rolls)
3. Dragon Claw Heracross
4. Flamethrower Blastoise
5. Flamethrower Tyranitar (heal and set up a 3rd X Special if somehow dead to the next round of sand)
6. Full Restore (Alakazam will Psychic for ~90 damage)
7. Dragon Claw Alakazam (it will outspeed and use Calm Mind, Psychic or Reflect)
8. Dragon Claw Exeggutor
9. Dragon Claw Arcanine (it will Extremespeed for about 45 damage)

IF HERACROSS DID NOT HIT ROCK TOMB TURN 1:
2. Ember Heracross
3. Dragon Claw Blastoise (it will Hydro Pump for ~175 damage or Rain Dance)
4. Dragon Claw Blastoise
5. Dragon Claw Tyranitar (it will Thunderbolt for ~90 damage; Full Restore here if Blastoise hit you)
6. Dragon Claw Tyranitar
7. Dragon Claw Alakazam
8. Dragon Claw Exeggutor
(You should be in Blaze from the sand damage, but if not, Arcanine will still die to the 2nd round of sand)
9. Flamethrower Arcanine (heal instead if dead to Extremespeed)