In about 2/3 of UU battles, the first move that a Pokemon does is Stealth Rock. Predictable or what? Now, there appears to be only two kinds of counter.
The first is making your team consist of only Grass, Ground, and Steel types. However appealing Sceptile-Torterra-Donphan-Rhyperior-Registeel etc. look, it's not really worth it. A HP Ice Sceptile can deal with Grass and Ground, and if you stick Focus Blast on it for Regi as well, it's the best.sweeper.ever. for anti-SR-by-typing teams.
The other alternative is Taunt. This is available on two Pokemon which can be leads - Alakazam and Mismagius. The former is a potent special sweeper, while the latter is.... not so offensive. A few more candidates that resist Dark and Ghost (common weaknesses to Alakazam and Mismagius) are Houndoom and Absol. If you are a defensive player, even Spiritomb might have some potential.
So use Taunt, especially if you have a Moltres or Entei on your team (I have both), or other Fire or Flying types.
This probably applies to OU as well although I've never battled OU before so I'm not sure.
The first is making your team consist of only Grass, Ground, and Steel types. However appealing Sceptile-Torterra-Donphan-Rhyperior-Registeel etc. look, it's not really worth it. A HP Ice Sceptile can deal with Grass and Ground, and if you stick Focus Blast on it for Regi as well, it's the best.sweeper.ever. for anti-SR-by-typing teams.
The other alternative is Taunt. This is available on two Pokemon which can be leads - Alakazam and Mismagius. The former is a potent special sweeper, while the latter is.... not so offensive. A few more candidates that resist Dark and Ghost (common weaknesses to Alakazam and Mismagius) are Houndoom and Absol. If you are a defensive player, even Spiritomb might have some potential.
So use Taunt, especially if you have a Moltres or Entei on your team (I have both), or other Fire or Flying types.
This probably applies to OU as well although I've never battled OU before so I'm not sure.