#4 Finn Balor
The addition of Balor to the Elimination Chamber match appeared a certainty when he was initially cast in the second chance four-way against Bray Wyatt, Apollo Crews, and Matt Hardy. That certainly may have wavered when Seth Rollins was added to that match, but in the end, he was booked for the Chamber.
Balor has worked hard to regain the steam that was initially lost when he injured his shoulder over a year and a half ago, which robbed him of the chance to defend his Universal Title against the likes of Kevin Owens, Bray Wyatt, Seth Rollins, Chris Jericho and Roman Reigns. It was all but a certainty that he would receive an opportunity at the title once he returned, however, he has yet to compete for the Universal Championship. Instead, he has been involved in various feuds that showcased his versatility in the ring and ability to work with different talent.
It has been a long road that Balor has travelled in order to compete for the Championship, but here he is amongst the seven challengers for the Universal Championship. Paul Heyman once highly touted how good Balor was in a promo, and how he would be quite the challenger for Brock Lesnar. That feud might just come to fruition.