When it comes to popularity within WWE, there is no Superstar the fans admire quite like 15-time WWE World Heavyweight Champion, John Cena.
For those in charge of WWE, and for the majority of members of the WWE Universe, John Cena is someone who can do very little wrong.
Cena is someone who is dedicated to WWE, to its charity connections and to its rising stars, all the while putting fans of the company first, too.
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With this in mind, 2015 has proved to be no exception for the face of the company, as Cena has helped to push not only his own fan base, but that of other WWE superstars on the roster as well.
Following the biggest night of the year a WrestleMania 31, Cena left as the holder of the United States Championship Title, and proceeded to carry out a United States Open Challenge segment for some time after.
This section, whether it was during an episode of Monday Night Raw, or during a pay-per-view event, always went down extremely well with followers of the company, not least because of the man who was calling up his opponents.
US Open Challenge
The US Open Challenge segment alone meant that the WWE Universe had something to look forward to even when other storylines and matches were forgettable and often seemed as if they were put together at the last minute.
From Dean Ambrose and Kane from the main roster to the likes of prominent NXT talent such as Sami Zayn, Cena's matches provided the ultimate platform for so many wrestlers to be given a well-deserved push in order to enhance their character.
As well as elevating the importance of the US Championship Title, John Cena played a significant part in the match of the year for 2015, which took place at the Royal Rumble.
Match of the year
This was the triple threat match between John Cena, Brock Lesnar and Seth Rollins for the WWE World Heavyweight Championship Title and even almost a year on, it has had little competition for a contender as the best match of 2015.
This bout saw a number of unforgettable spots as well as allowing every wrestler to seem as close as possible to being the winner, making it an incredible match from start to finish.
In addition, John Cena also continued to promote his commitment to charity work throughout 2015 as he granted his 500th wish for the Make A Wish Foundation earlier this year.
Ultimately, despite being one of the more experienced wrestlers on WWE's current roster at the age of 38, it seems there will be no stopping the face of the company any time soon.
Cena is currently taking some well-deserved time off from WWE following an extremely hectic schedule this year, but the WWE Universe and company alike, will surely welcome him back with open arms.