The Battle of the Asio River took place in March of 82 BC during the context of Sulla's Second Civil War. The battle pitted the Optimates under the command of Quintus Caecilius Metellus Pius and Gnaeus Pompeius Magnus against the Populares forces commanded by Gaius Carrinas. This battle marked the start of this phase in the civil war and resulted in an Optimate victory.