This Sunday, WWE will hold its sixth Hell in a Cell PPV, with two singles matches scheduled to be held inside the Hell in a Cell: Dean Ambrose versus Seth Rollins, and the always-fresh John Cena versus Randy Orton. They will be the 29th and 30th matches inside the cell since its inception in 1997. Hell in a Cell is like a cage match on steroids. Much like the cage match was in the 70s and 80s, the cell is designed to be an ending point for feuds. Often times, well see a title match end in a disqualification due to constant outside interference, or a competitor repeatedly running away from an opponent, necessitating the cell to keep the two wrestlers in and others out. But thats not always the case with cell matches. Sometimes they are booked oddly, or lately matches are just placed inside the cell because theres a PPV and the cell needs to be used. Cena-Orton is a good example, while Ambrose-Rollins is a great use of the cell as part of their ongoing feud. Throughout its 17-year existence, there are some interesting facts and figures that have came to light. Who has won the most cell matches? Who has never won inside the cell? How often is a title defended and changes hands? Who has competed inside the cell? And how successful is Hell in a Cell at actually keeping the competitors inside and others out? Lets find out a little more about the ins and outs of the previous 28 Hell in a Cell matches.