The match will be non-sanctioned, so anything goes when the two stars step inside the ropes.
After Rollins signed the contract, Triple H attempted to gain the upper hand, kicking a conference table into Rollins' injured knee. WWE Universe shared video of the incident on Twitter:
The two-time world heavyweight champion recovered, though, and dumped Triple H out of the ring before standing defiant in the squared circle.
Contract signings can be hit or miss in terms of entertainment and storytelling, but Monday night's back-and-forth between Rollins and Triple H did a great job of effectively telling why the two need to settle their differences Sunday.
Rollins in particular offered a passionate explanation of his problems with The King of Kings, courtesy of WWE:
Bleacher Report's Mike Chiari was a fan of the segment:
It will be interesting to see how much WWE embraces the non-sanctioned aspect of Sunday's match.
Brock Lesnar wrestled Dean Ambrose in a street fight at WrestleMania 32, which many considered one of the most disappointing bouts on the card because it didn't stray too far from a typical singles match.
Triple H has had his fair share of extreme matches, especially when he and Mick Foley battled in a series of gruesome bouts in 2000. But that was during a different period in WWE's history, when the company didn't put as much of an emphasis on wrestler safety.
Even if Triple H vs. Rollins is closer to Lesnar vs. Ambrose than Triple H vs. Foley, it should still be an exciting clash considering the stakes involved.