The war went on for a decade, in which time Hector killed Patroclus, and Achilles killed Hector. When the time came for Paris to kill Achilles, he was up to the task.
History and Legend of Ancient City of Troia

The war went on for a decade, in which time Hector killed Patroclus, and Achilles killed Hector. When the time came for Paris to kill Achilles, he was up to the task.