I forgot CJ was on this show.... are you sure???
Oh, Casey is a completely pathetic athlete. But, I do think she tried for Wes. She did every single one of those exiles, and she even let him throw themselves in to save Johanna. It's true that she did refuse to do the jumping one, but I don't really blame her. At that point, they were going in anyway. If he was my partner, and we were going in the way they were, and we were gonna get a week off and he wanted to put us in anyway, I would have said no way. So I'm not saying she wasn't pathetic, just that she did everything he told her to, and all he could do was scream at her. Of course it wouldn't occur to him to simply be encouraging.... She does do a little better now, at least in terms of trying most things.
If I were to go on this show, I would want to be partners with a strong guy who's had crappy partners/team members, so isn't seen as a threat, like Dunbar. Even though he's not too bright, I'm good at strategy, so it'd be okay. Or a guy like Derek, who everyone loves. Or Brad, or Cohutta. People who aren't seen as champs, but don't make anyone mad either.