Star Wars: Knights of the Old Republic/Duel Ring

The Duel Ring
The lobby for the dueling arena, containing the Duel Organizer, is to the south in the Upper City Cantina. The Duel Organizer, a Hutt called Ajuur, sits at the back of the room by the south wall, while the current Taris Dueling Champion, a Rodian nicknamed Twitch, stands in the southeast corner by a First Aid container containing a Medpac, and the remaining duelists cluster on the opposite side of the room by the west wall. Arena monitors line the east wall, and two duel spectators stand in the northeast corner. If you approach the latter, a cutscene plays:

The focus shifts to the view screen of the dueling arena:

As they draw, Deadeye Duncan drops his Blaster Pistol, and Gerlon Two-Fingers has no problem gunning him down with his own.

If you speak to the duel spectators they comment on the duelists, and you can also speak to the duelists themselves (with varying degrees of success). To get down to business, approach Ajuur and speak to him:

Carth interjects if he's present:

Whenever you return to speak to him before becoming a duelist:

You can never persuade him to give you more.

Carth interjects if he's present:

Whenever you return to speak to him after becoming a duelist but turning down a match:

You still have one last chance to walk away:

Having finally committed to a duel, the action shifts to the dueling arena in the south east corner of the Upper City Cantina map (any party remains in the lobby of the cantina).

Each duel is announced as follows:

Defeat
You return to the lobby with just 1 Vitality. However, there's no need to heal if you duel again: you always begin each duel fully healed, at maximum Vitality. You can speak to Ajuur:

If you speak to him again without any victory:

If you've already had at least one victory:

Victory
You return to the lobby where you can speak to Ajuur:

If you've already had at least one victory:

The reward for winning each duel are as follows:

Dialog
If you're male:

If you're female:

Speaking to her again isn't helpful:

Duel
Speak to Ajuur and tell him you're ready for a duel:

Her ranged and melee abilities are fairly balanced, so play to your own strengths.

If you lose:

If you win:

Speak to Ajuur to receive your percentage of the purse:

Dialog
Marl is the oldest and friendliest of the duelists (at least outside the dueling arena):

You can return to speak to him at any time:

Duel
Speak to Ajuur and tell him you're ready for a duel:

Marl is an exclusively melee fighter, so grenades aren't normally a good idea: either he'll run out of range, or you'll also be within range. If you cannot stand toe-to-toe with him, running and gunning works, although you should avoid using Power Blasts or Sniper Shots as their longer animation outside the framework of combat rounds gives him more time to close to melee range.

If you lose:

If you win:

Speak to Ajuur to receive your percentage of the purse:

Dialog
You can try talking to the current Taris Dueling Champion Twitch, but it soon becomes clear why he stands apart from all the other duelists:

Duel
Speak to Ajuur and tell him you're ready for a duel:

Twitch favors two Heavy Blasters and he can use Rapid Shot, so closing to melee range and obliging him to draw his Vibroblade is recommended. However, if you're saving levels or have low chance to hit, you may prefer to maintain distance, using shields to negate damage and grenades to inflict it.

If you lose:

If you win:

Speak to Ajuur to receive your percentage of the purse:

Bendak's Bounty
Run! The first thing Bendak does is throw his Plasma Grenades. He'll stop once you're in melee range, but if you're not confident enough to go toe-to-toe with him then keep running around the arena until he's thrown all three.