John Cena is one of the more charismatic wrestlers since the likes of The Rock and Stone Cold Steve Austin. Cena had an amazing run as WWE Champion, reigning nearly a year—280 days to be exact—dating from 2005-2006.
2007 is where it has started to go wrong for The Chain Gang Commander. On October 1st, 2007, Cena tore his pectoralis major muscle practically off the bone. He was stripped of his title and put on the shelf for a little over three months.
One can't discredit Cena's heart, tho. His rehabilitation timeframe was slated for seven months to one year, and he returned in three, also winning the Royal Rumble. After falling short in regaining his title from Randy Orton at Wrestlemania XXIV, Cena was thrown into a rivalry stemming from his 2005 feud with JBL.
Cena was first victorious over JBL at Judgement Day in a singles match. As if the one match wasn't enough to end the feud, Cena and JBL squared off again at One Night Stand, in a First Blood Match. Again, Cena was victorious over the self-proclaimed "Wrestling God".
It now seemed that Cena was ready to start a title run on new World Heavyweight Champion CM Punk. Instead of the title run, Cena was thrown into another match with JBL, this time at the Great American Bash. JBL defeated Cena in a Parking Lot Brawl, thus finally ending their drawn out feud.
After an exhausting match with JBL, Cena was thrown into a program with Batista. After their match at SummerSlam, which Batista won, Cena was put into a two-on-one handicap match against DiBiase Jr. and Cody Rhodes.
News then came that Batista's two devastating power-bombs severely herniated a disc in Cena's neck, requiring him to have immediate surgery, and taking him out of the World Heavyweight Championship Scramble.
Cena's use in violent matches brings up questions of judgement. Not more than a year ago Cena's popularity was at its peak, comparable to The Rock, Dwayne Johnson. Since that time, Vince McMahon has exploited and misused John Cena, resulting in two serious injuries taking away from his title reign, and possible first ever World Heavyweight Championship run.
No matter which way you look at this, one thing is for certain—John Cena is a staple in the WWE, and Vince McMahon is a staple remover.