Why WWE Booked CM Punk vs. Finn Bálor at Elimination Chamber

TLDR

CM Punk will defend his World Heavyweight Championship against Finn Bálor at Elimination Chamber in Chicago on February 28, with the match being booked because Punk personally wanted to work with Bálor. The feud escalated on the February 9 episode of RAW when Bálor interrupted Michael Cole, claimed he injured Punk, and demanded a title shot, leading to Punk accepting the challenge despite General Manager Adam Pearce's attempts to protect the WrestleMania 42 main event.