Jinder Mahal

The only jubilant moment of his career was when he became the World Heavyweight Champion before the India tour back in 2017. Since then, Jinder Mahal has lost his relevance completely on the main roster. Currently, he is pursuing a meaningless gimmick where he is acting like a yoga guru.
Let's accept the fact that he will never ever receive the same spotlight again and he is going to be a mid-carder for the rest of his career. His chances of winning the Rumble match is impossible.
Cody has no chance against John Cena? Details HERE
Chances: No Chance in Hell
R-Truth

R-Truth played his cards right and won the Mixed Tag Team Challenge alongside Carmella to book his place on the most convenient spot of the Rumble Match. It will take a Herculean effort for him to win the match, but we can expect a lot from him in terms of entertainment.
He is one of the most entertaining wrestlers on the roster. While he won't win, it will still be a pleasure for him to enter the rumble and do his thing of entertaining the masses with a 7-second dance break.
Chances: No Chance in Hell