[JohnWesleyX]

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Dugtrio can make a surprisingly useful lead with this moveset. It outspeeds the fastest sleeper in Gengar, and it can severely lower Exeggutor's Sleep Powder accuracy. You could get lucky and Mimic Sleep Powder, and then put your opponent's Exeggutor to sleep. However, it is dangerous to use against a lead Jynx, as Blizzard will OHKO. Dugtrio also makes a semi-decent late game sweeper with its high critical hit ratio and STAB Earthquake.

Dugtrio's Earthquake 3HKOes Starmie, 3HKOes Chansey, 4HKOes Tauros, and 2HKOes Alakazam on average. Earthquake only does 91% damage to Gengar, which can be annoying, but if you can get Gengar to switch in on an attack from a low-health Water-type, you can bring it down to less than 91% and then switch to Dugtrio on the expected Thunderbolt, for instance.

Slash 4HKOes Exeggutor as well, and does in the other standards in an equally quick time. Slash is the technique which, in combination with Earthquake, allows Dugtrio to do the most amount of damage to the widest range of Pokemon.

Substitute and Sand-Attack are fillers, the idea being that you Sand-Attack your opponent and try to hold on to a Substitute, and then attack from behind the Substitute. This strategy doesn't work without a fair amount of luck, but is worthy of mention.

All of Dugtrio's set made me laugh. Its main selling point was Sand Attack.