#1 The Undertaker was a huge help to John Cena is his early WWE career
John Cena was part of the OVW class that The Undertaker had his eye on.
Although he made his shocking WWE debut against Kurt Angle in an impressive display, it was the handshake with The Undertaker backstage that put him on the map. The fact that reigning the Undisputed WWE Champion made this gesture for the young up and comer live on TV proved to WWE Universe that Cena was something special.
The two wouldn't cross paths again until a year later at Vengeance. The premise was great; it was New School vs. Old School. Cena was the young and hungry and 'Taker was the grizzled veteran. In the match, The Undertaker dominated The Leader of Cenation, teaching him a lesson in respect. However, Cena would fight back and surprisingly get a ton of offense in.
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This match with The Phenom would lay the foundations for Cena's rise to the top and the rest, as they say, is history.
Cena's success and all the other names on this list is a testament to The Undertaker's guidance for young talent coming up through the ranks.
As The Undertaker's career comes to an end, the stories of his selfless acts in the ring and backstage are coming to light. His willingness to share his decades' worth of experience will live on through those who benefitted from it and they will pass on this wisdom to future generations.