Sumo at Sea

Tensions rise within both tribes when they are forced to choose leaders for the next Reward Challenge. What role will the leaders play? One castaway becomes annoyed when a tribemate complains of having no energy and doesn't help the tribe. Spirits are high within a tribe when they win a Challenge and an extraordinary Reward. It is still early in the game, yet signs of tribal division emerge when one group considers banding together to vote out a tribemate. Who is the unlucky one?