One of the castaways on CBS's Survivor: Worlds Apart may be dragging his tribe down too much to go further in the game.

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CBS has released a sneak peek of the next episode of Survivor: Worlds Apart, titled Odd Woman Out. The sneak peek is of the Reward Challenge being played, with the Escameca tribe (Dan, Joaquin, Joe, Mike, Rodney, Sierra and Tyler) going against the Nagarote tribe (Carolyn, Hali, Jenn, Kelly, Shirin and Will).

The Reward Challenge appears to be a very physical one as the castaways are asked to run through a big course in order to get to the top of a structure. Sierra and the men of Escameca predictably get to the top first but Nagarote is not too far behind. However, the castaway bringing up the rear for Nagarote is Will, who host Jeff Probst calls out in the challenge.

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Will's performance in challenges has not been strong over the past few episodes, and despite the Nagarote tribe ultimately catching up with Escameca, they may decide that Will is too weak if they have to vote someone out in this episode.

However, the castaways may also know that a merge is coming very soon and Will is someone who won't be a threat in individual Immunity challenges. The tribes usually merge when there are 12 people left, which will be the case after episode 6's vote off.

Additionally, the tribe dynamic at Nagarote is such that Shirin is on the outside looking in after the rest of her tribe voted out her best friend in the game, Max, in the last episode.

Survivor: Worlds Apart airs Wednesdays at 8 p.m. ET/PT on CBS.

Watch the sneak peek for the next episode of Survivor: Worlds Apart here: