The Parliamentarians approached the city from the south on the afternoon of 23 September. Their route took them up narrow lanes and straight into Rupert's force, which was resting in a field. The noise of the approaching Parliamentarian cavalry alerted the Royalists, who quickly formed up. The Royalist dragoons gave their cavalry time to prepare, firing at point-blank range as the Parliamentarians emerged into the field. Rupert's cavalry then charged and broke most of the Parliamentarian cavalry, though one troop stood its ground and returned fire. Ultimately, all of the Parliamentarians were routed.