Click Pokémon icons during battles to open their Smogon StrategyDex page.
During a battle, click any Pokémon icon below a player's name & avatar to open its Smogon StrategyDex page in a new tab. The analysis page will match the battle's generation and tier (e.g. screenshots below are from a gen 3 OU battle).
Hopefully works for all species in all formats, post a bug report if not.
