Since in this weeks smackdown we got that in the elimination chamber will be kane, orton, bryan,swagger , khali and ???? im taking my guess that in mania it will be orton (heel) vs del rio for the world heavyweight championship.
i think big show will face ryback
and sheamus will continue whit his feud with the shield
so the logical point would be del rio vs orton, i think it could be a very good match and it can give del rio his wm moment