5 youngest WWE Superstars to main event WrestleMania

#4 John Cena - 28 years old (WWE WrestleMania 22 vs Triple H)

John Cena defended the WWE Championship against Triple H in the main event of WrestleMania 22

WWE WrestleMania 22 saw John Cena compete in his first ever WrestleMania main event. The emerging face of WWE defended the WWE Championship against Triple H in an excellent encounter.

The bout was grandiose from the beginning, with both John Cena and Triple H making spectacular theatrical WrestleMania entrances.

John Cena portrayed a Chicago-inspired gangster from the prohibition era, carrying a Tommy Gun and being flanked by other Chicago gangsters. One such gangster included a young CM Punk before his rise to WWE superstardom.

Meanwhile, Triple H made a Conan The Barbarian inspired entrance at the AllState Arena in Chicago. The Game entered to a Motorhead-performed "King of Kings" theme song while perched on a giant Hyborian Age throne, emblazoned with the Triple H logo.

Once the match began, the polarizing crowd loudly cheered the heel, Triple H, and bood the babyface, John Cena, in a surprising turn of events.

Irrespective of the crowd's desires, John Cena eventually defeated Triple H, forcing The Game to submit to his STF submission hold. The WWE Champion at the time was only 28 years old, making him one of the youngest WrestleMania main eventers in WWE history.