Duel between Arthur and Morgause

The duel between Arthur and Morgause occured after the sorceress Morgause challenged Arthur to a duel in swordcombat. Post-duel there were a lot of arguing and conflict about Morgause competing. But eventually, they both ended up on the Duelling pitch. Arthur gave Morgause one last chance to withdrawal but she rejected it without thought. The duel started of fair-gamed, no one was winning, no one was losing. But then Arthur disarmed Morgause, honourably, he let her pick up her sword and resume the fight. Morgause then began winning, she eventually got Arthur to the edge of the pitch, kicked him, Arthur fell to the ground and Morgause holding him at swordpoint. Morgause spared Arthur after he accepted her conditional challenge (The Sins of the Father).

The results of this duel bothered Arthur in the future, when he was facing Morgause at the Castle of Fyrien, saying, "I know what you're capable of..." (The Castle of Fyrien).