The main event for Summer Slam has been confirmed ever since the Undertaker returned at Battleground and targeted his old nemesis Brock Lesnar.
This has left a lot of people wondering what the plan is for the WWE World Heavyweight Champion Seth Rollins.
In recent weeks, Rollins has been involved in a few altercations with the United States Champion John Cena.
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Cena and Rollins' altercations had mostly come down to Cena calling him a joke of a champion, until last week's episode of RAW anyway.
The duo faced off in the main event last week for Cena's United States Championship - a match which will be remembered for a long time to come.
The match won't be remembered for the quality of wrestling on display, but for the gruesome broken nose suffered by Cena after Rollins' knee connected with his face.
With Cena now left off TV to recover from the horrific injury, Rollins began RAW tonight and set out to make a challenge to Cena.
For weeks, many had expected Cena vs Rollins at Summer Slam but everyone was curious about what title may be on the line.
That question has now been answered as Rollins has challenged Cena to a title vs title match meaning that there will be a historic title reign at the end of the night.
Never has one man held the United States and WWE World Heavyweight Championships at the same time but it seems likely to happen after Summer Slam.
Opinions appear to be divided on the Cena vs Rollins storyline headlining Summer Slam, this could be due to the fact that it is the second time the two will feud in less than a year.
Cena has certainly upped the reputation of the US Championship since claiming it at WrestleMania XXXI but could it now being with the WWE World Heavyweight Champion undo that work?
Only time will tell who claims both titles or if a third outcome is found, but either way, the two are expected to make an eagerly anticipated match going into Summer Slam.