The number of names that have competed in ECW, WWE, WCW and TNA are countless. However, men that spent the lions share of their career with one of those companies may not have crossed paths with the stars of other promotions. Think of some of the names from those companies' history: Sting, the Undertaker, Hulk Hogan, Brock Lesnar, Randy Savage, Shawn Michaels, Triple H, Ricky Steamboat, Goldberg, Randy Orton, Eddie Guerrero, The Rock, Bret Hart, the Ultimate Warrior, Owen Hart, Rick Steiner, Chyna and Trish Stratus. They would all easily make up a wrestling hall of fame. Fans may think that many pairings of those names listed above never happened, and can only be dreamed upon. But the surprising part is that not only did these matches happen, but they are documented and can be searched out.

Who faced who and when? Where did these talented wrestlers face one another, and who came out on the other side victorious? For those most part, these were one off confrontations that did not have much steam behind them as there was no feud involved, or even much build. The results of some of these matches may catch fans off guard, given who came out as the winner. Here are fifteen huge matches you probably had no idea happened.

19 15. John Cena vs. The Undertaker

They are two of the biggest stars that WWE has ever had. One could argue that no one has been more important in the post-Attitude era than these two. Still, they rarely shared a ring, but that isn't to say that they will never do so again. Often, fans will speculate that Cena and The Undertaker will cross paths one last time at WrestleMania. In fact, that rumor continues to swirl once again as the Royal Rumble approaches.

What is interesting to note is that this match has in fact taken place before. At Vengeance 2003, The Undertaker, who was using his American Bad A** gimmick, faced off against Cena, who was transitioning away from his Doctor of Thuganomics persona, though he still demonstrated some overconfidence, if not arrogance, in the ring. Taker picked up the win in a match that not many even remember the match took place.

18 14. Goldberg vs. Shawn Michaels

During Goldberg's initial WWE run, he captured the WWE heavyweight championship, and during that run he feuded with the likes of The Rock, Triple H and Chris Jericho. While it was unfortunate that Goldberg's run was a few years after WCW had closed its doors that doesn't mean there wasn't a conscious effort to make it a success.

It was difficult to try and replicate the booking from his WCW run, but Goldberg still had notable feuds that would not have happened had he not have been with the company. In any event, on one occasion, Goldberg defended his championship against the multi-time heavyweight champion Shawn Michaels. The match ended in a no contest and there was no decisive winner in the match. They never faced each other again, but it would have been interesting to see if a program could have been effectively developed between the two.

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15 13. Bret Hart vs. The Rock (as Rocky Maivia)

He was the best there is, the best there was and the best there ever will be. However, when Bret Hart faced off against Rocky Maivia, little did anyone know that they were seeing the Excellence of Execution against the Great One. Before departing the WWE in 1997, Bret had a successful run as a heel in the United States while being considered a face in Canada. It was unique booking for the company at the time, and has yet to be matched since.

What is interesting to note is that their match was for the Intercontinental championship. In the end, it was of no real benefit to either party, as the match ended with no clear winner. As life would dictate, these two wouldn't match up again, leaving one of the best what if's in wrestling history.

14 12. Randy Savage vs. Shawn Michaels

At his peak, the Macho Man Randy Savage figuratively stood above men two times his size. He was part of some of the best matches and feuds in wrestling history. He had a huge personality, but a very sharp mean streak that would often get the better of his opposition. Randy Savage was used primarily on commentary towards the end of his run with WWE, at the same time that Shawn Michaels was breaking through as a singles wrestler.

The concept of a feud between the brash young Michaels and the experienced Savage was plotted out by the Macho Man, but unfortunately didn't come to fruition. The idea was that Savage would end his career while helping to elevate Michaels. Unfortunately, Savage departed the company shortly before the mid-1990s, just as Michaels was ascending to the top. They faced each other just one time, at the WWE's UK Rampage in the early 1990s.

13 11. Chyna vs. Trish Stratus

During the late 1990s and early 2000s, two of the biggest female stars in wrestling were Chyna and Trish Stratus. While they were popular for very different reasons, they both provided wrestling fans with a number of exciting moments throughout their respective careers. Chyna blazed a trail, competing against men and capturing the Intercontinental championship. Stratus on the other hand earned a name for herself capturing the WWE women's championship on multiple occasions.

Though they were booked very differently throughout their careers, there was a time where their paths crossed. The promotion had decided to move Chyna into competing against the women in the company. After capturing the women's championship at WrestleMania X-Seven, she faced a rather inexperienced Stratus, who was still, very green. It would have been interesting to see what would have happened against a much different Trish Stratus.

12 10. Eddie Guerrero vs. The Rock

He lied, he cheated and he stole, and during his time with the WWE, the late great Eddie Guerrero was also able to compete against the Great One in a non-title match. On one particular episode of Monday Night Raw, Guerrero had to defeat The Rock in order to earn a title opportunity the following week. It was a fine match, as the contest went back and forth. However, fate played a role, as Guerrero missed hitting his finishing move which set him up for the Rock Bottom and the People's Elbow.

Sadly, this was a one-off and they never faced each other again. After The Rock departed, Eddie eventually captured the WWE championship. But neither was on top of the company at the same time. Guerrero passed away in 2005, and The Rock has since achieved super stardom outside the WWE.

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10 9. The Hart Foundation (part of later incarnation) vs. The Steiner Brothers

During their time they were four of the most technically savvy wrestlers, Bret and Owen Hart, and Rick and Scott Steiner. While Scott Steiner's physique and ring style changed later on in his career, he and his brother were considered one of the greatest tag teams of the early 1990s. Over time, Bret and Scott were the two that broke away from their respective teams to achieve individual success. It should also be noted that Owen and Rick has notable careers, capturing championships in their own right.

During the Steiners' time with WWE, both they and the Harts were faces. But in what was rare booking in the WWF, there was a time where the company had a face match up against another face. Thus, the Harts faced off against the Steiners in what ended in a rather common double disqualification. A rivalry between the brothers never materialized, and they never faced each other again.

9 8. Triple H (as Jean-Paul Levesque) vs. Ricky "The Dragon" Steamboat

One of the greatest wrestlers of all time once faced off against a much greener wrestler who became one of the greatest champions of all time. It is hard to envision that their paths ever crossed, but Ricky Steamboat did indeed face Triple H. Without the pomp and circumstance that was Triple H and Sting at WrestleMania, a young Jean Paul Levesque (Triple H's real name) squared off against The Dragon in the most unlikely of promotions. World Championship Wrestling provided a number of young wrestlers an opportunity early in their careers, and Triple H was one.

Triple has been a Greenwich blueblood, aristocrat and a cerebral assassin in the ring. But when Ricky 'The Dragon' Steamboat and Levesque faced each other, it wasn't during a major event or special, but simply on an episode of their weekly WCW Saturday Night program. This was towards the end of Steamboat's career, and just the start of The Game's.

8 7. Brock Lesnar vs. Hulk Hogan

Brock Lesnar debuted in WWE shortly after Hogan returned to the company after many years, and reunited the now. Lesnar was a quickly rising star, while Hogan was the transcendent star from the past who was making a triumphant return, after almost a decade away. Inevitably, the two faced each other in the ring. However, it went very badly for the man that led the charge behind Hulkamania. While this was a confrontation, it wasn't much of a match between the two. Fans might recall that back in 2002, the young Lesnar faced Hogan as the Hulkster was approaching his departure from the company.

The right decision was to have the monster in Brock dominate Hogan and come out victorious. Lesnar's inhuman strength was evident, and he finally forced Hogan to lose consciousness during a bearhug. Regardless of the one-sided result, two of the most notable names over the past three decades did indeed get to face-off.

7 6. The Undertaker vs. The Ultimate Warrior

It seems like a lifetime ago, but at one time the unstoppable force that was The Ultimate Warrior faced another seemingly irresistible force in The Undertaker. Something had to give between these two men, but what? The premise of their feud was essentially a battle of 'unknown forces'. By today's standards it seems a little much, but in 1990, the Warrior exuded a persona that was larger than life. And during those days The Undertaker was able to draw on the power of the dead.

During their battle, The Undertaker placed The Ultimate Warrior inside a casket with the aid of Paul Bearer and locked him inside it. It was without question the greatest challenge the Ultimate Warrior had faced during his time in the WWE, and the one thing he could not find an answer for was the power that is The Undertaker.

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5 5. Kurt Angle vs. Ric Flair

Ric Flair captured the World championship an astounding sixteen times. Kurt Angle has also captured championships a number of times, both in WWE and in TNA. Angle was known during his time in WWE for promoting his three I's of integrity, intelligence, and intensity, but he had a mean side as well. Though they crossed paths in both promotion, Flair and Angle really only had one true confrontation.

It was in 2005, before Angle left WWE, that he faced the Nature Boy. Flair's best days were clearly behind him, but he still possessed incredible stamina and could wrestle matches as long as an hour in length. The two competed against one another in a match on Monday Night Raw, and it saw Angle win with his ankle lock submission. While the match wasn't considered a classic, it was certainly a highly competitive match between two men that could tell a story like few others.

4 4. Sting and The Ultimate Warrior vs. Bret Hart and Hulk Hogan

That isn't a typo, the above match did take place. Several years before both the Ultimate Warrior and Sting earned a name for themselves as singles wrestlers, they were a team in multiple promotions during the Territory Era. They were managed by Dirty Dutch Mantel, and were known as the Blade Runners. They were still green, but with the guidance of Mantel they were developing and set to become break out singles wrestlers.

However, after Bret Hart departed WWE for WCW and the Ultimate Warrior joined WCW for a brief time, it was an opportunity to bring together four of the biggest names in wrestling history. The match was a wash, sadly, as neither Hogan nor the Warrior could truly wrestle a compelling match at that stage of their careers. Their 1998 match was easily forgettable, which is probably why many wrestling fans don't know it happened.

3 3. Goldberg vs. Randy Orton

The recently returned Bill Goldberg made a name for himself in WCW, and once again while competing in WWE. One of the biggest criticisms of Goldberg was his inability to have a compelling match that could tell a story which fans would remember and discuss. When WCW closed, fans wondered what would happen if he came to WWE. Those 'what ifs' were replaced with 'what abouts' when he did arrive in WWE.

During his short time there, he feuded with a number of biggest names the company had to offer. In what was a star studded affair, with a great deal of outside interference by the likes of Ric Flair and Stone Cold Steve Austin, Goldberg once faced Randy Orton on an episode of Monday Night Raw. This was when Orton was part of the Evolution faction, and it provided fans with a memorable moment as Austin and Goldberg allied with each other.

2 2. AJ Styles vs. Seth Rollins

Two of the greatest in ring performers since the millennium have faced each other in WWE, but their confrontations have been held to house shows rather than being a focal point on television. But in 2006, As a young and aspiring wrestler who did not yet have the name Seth Rollins walked into what appeared to be a gymnasium and wowed the crowd. The fresh faced and clean cut performer, then called Tyler Black, was very young and just getting his feet wet in the business.

His competition at this time was a near five year veteran who was rapidly growing in popularity each day, the Phenomenal One, AJ Styles. As the veteran, Styles could help to dictate the pace and lead the young Rollins during the match. However, Rollins certainly demonstrated incredible acrobatics along with tremendous athleticism inside the ring.

1 1. Sting vs. The Undertaker (as "Mean" Mark Callous)

This has long been considered a dream match. A couple of years ago, when rumors circulated that Sting was going to be joining WWE, fans speculated on potential dream matches. A match up that fans consistently wanted to see happen for many years were WCW's icon, Sting, against WWE's icon The Undertaker. But as it turned out, when Sting arrived in WWE he was brought in as a vigilante who was there to thwart, the forces of Triple H and the Authority.

What fans may not necessarily know was that before he was The Dead Man, The Undertaker competed in WCW as 'Mean' Mark Callous, and faced none other than the man called Sting. The match happened years before it was a dream match, without any fanfare. In fact, it was at a 1990 house show, and video of it has never seen the light of day.