[Old Man Reaver]

From the Counters section on the Metagross page... (http://www.smogon.com/dp/pokemon/metagross)

Rotom-a can immediately threaten Metagross with Will-O-Wisp, whom obviously won't enjoy being burned, or stall through Rest + Sleep Talk if needed.

This is gramatically incorrect. It should be who. Who should function as the subject of "enjoy."

EDIT: Oh wow, this section got utterly mangled. It's from Pyroak's Counters (http://www.smogon.com/cap/pokemon/strategies/pyroak).

Heatran and, Dragonite and Salamence both resist it's dual STAB, but Heatran is vulnerable to Brick Break and both do not enjoy Leech Seed. Special versions of Salamence do extreemly well though as they do not mind Burn as much as their physical counterparts. Tentacruel causes Pyroak to take damage from Leech Seed thanks to it's Liquid Ooze ability. It resists it's fire STAB and Grass Knot has a measly 60 BP against it. Togekiss can easily switch in, and doesn't mind a Burn / Leech Seed as much as some others. STAB Air Slash hits Pyroak's weaker side. Moltres and Charizard are only mildly troubled by Leech Seed and not much else. Both can hit back with Air Slash. Arcanine, Ninetales, and Houndoom with Flash Fire can all come in on a Fire attack, get an attack boost at no damage, and then begin with a strong offensive. In addition to being immune to Fire, they resist it's Grass STAB as well. However, they all need to watch out for random Hidden Powers. Ninetales doesn't mind this as much as the others, but it should make Arcanine and Houndoom wary if Stealth Rock is down.

Better phrasing for the first sentence:

Heatran, Dragonite, and Salamence all resist its dual STABs, but Heatran is vulnerable to Brick Break and none of them enjoy Leech Seed.