This Saturday Metamoris 5 will be held at the Long Beach Convention Center starting up at 5pm/2pm EST/PST, headlined by a rematch of Pride classic between Renzo Gracie and Kazushi Sakuraba. This match sits atop a solid night of grappling, despite it being hit by the injury bug about as hard as a UFC event.

The event will stream online on Metamoris.com for $30.

For those unfamiliar with Metamoris, it is a jiu jitsu promotion that holds events of "fight cards" rather than the normal tournament structure. The matches are 20 minutes with no rounds and no points, the only way to win a match is by submission.

The card has some excellent grapplers, but some names won't jump off the page for MMA fans or even fans of grappling who don't closely follow the competition circuit. So here is a quick rundown of the matches, who the competitors are, and some sure to fail predictions.

Renzo Gracie vs Kazushi Sakuraba (No Gi)

The headliner, a rematch between two MMA veterans who met for the first time at Pride 10 in 2000, in a famous match were Sakuraba broke Gracie's arm with a Kimura. This was part of Sakuraba's famed run against the Gracie family that earned him the title "The Gracie Hunter". While there is no actual bad blood between Renzo and Sakuraba, the rivalry between Sakuraba and the Gracie family is one of the most famous in the sport, so it should make for an excellent match.

Who are these guys?

Most MMA fans are highly aware of these two as they both had rather storied careers in that sport. Member of the famed Gracie family, Renzo has a spotty reputation among MMA fans due to his recent third-degree assault charge but is still largely beloved in the grappling world. In addition to a 13-7-1 MMA record, Renzo has two gold medals from ADCCs, the most difficult and prestigious no-gi grappling tournament in the world, making him one of the elite sport grapplers at the turn of the millennium.

Kazushi Sakuraba, along with Metamoris Heavyweight Champion Josh Barnett, is one of catch wrestling last great representatives active in combat sports. He started out as a scholastic wrestler in Japan, and learned catch wrestling from the late great Billy Robinson and went on to become one of the best submission artists in MMA history.

Prediction sure to be wrong

This is a tough one, both are outstanding grapplers. Sakuraba plays a game that defies the predominant Jiu Jitsu approach to grappling that has bested many great grapplers. Sakuraba has already submitted Renzo once, so he has that in his favor. However, Sakuraba's love of smoking and drinking is well known, as well as his clear physical decline that impacted the end of his MMA career. While Renzo's MMA career is certainly not soaring, he trains consistently with top flight competitive grapplers, so based on that I lean Renzo in this match.

Rory McDonald vs J.T. Torres (No Gi)

Metamoris has liked putting on fights featuring MMA fighters, sometimes featuring those with no competitive submission grappling experience, such as Brendan Schaub and Chael Sonnen, neither of whome delivered overly impressive performances. So this match has a very low bar to clear to be the best of its kind and it has the potential to clear it and then some.

Who are these guys?

Rory MacDonald is a top contender in the UFC Welterweight division, he holds a black belt in "no-gi Jiu Jitsu" under David Lea and trains out of Tristar gym. He has no high-level experience in competitive grappling but is an outstanding athlete with a decade of grappling.

J.T. Torres is one of the best Americans in competitive grappling and received his black belt at age 20. He currently trains at Atos, one of the top grappling teams. Torres won the No Gi World Championships in 2013 and has chest full of medals from a large variety of grappling competitions.

Prediction sure to be wrong

This is an intriguing one. MacDonald is going to be significantly larger than Torres, who competes at Lightweight in BJJ, with a weight limit of 167-lbs, while MacDonald cuts significant weight down to 170-lbs for his MMA matches. Across 20 minutes of grappling, size could play a serious factor as the competitors get tired. However, it is pretty clear Torres will hold a significant experience and technical advantage. MacDonald's lack of experience in competition grappling makes it almost impossible for me to see him winning. I won't totally rule it out, but it is far more likely he ends getting bogged down trying to pass guard and ends up making a mistake. If Macdonald is able to make it a high pace match filled with scrambles, he'll likely stand a better chance, but it is a long shot, his best case scenario is a draw, so I expect a low risk approach from MacDonald and a draw.

Yuri Simoes vs Keenan Cornelius

Originally this match was to feature Rafael Lovato Jr, the best and most accomplished American Jiu Jitsu grappler to date, but when injury forced him out he was replaced by the young man many expect to replace Lovato as the greatest American in submission grappling, Keenan Cornelius. Yuri Simoes and Keenan have met twice before in the last year, with Yuri getting a win in the Absolute Division of No-Gi Worlds and Keenan earning the victory in the finals of the FIVE Grappling California 1 Championships. This match is set to be an exciting trilogy match between two rising stars.

Who are these guys?

Both are phenom type talents, but Keenan is the far more recognizable of the two. His name first started to be spoken in gyms in 2012 when Keenan took gold medals in his weight class and absolutes at every major gi tournament and then nearly repeating the feat at brown belt in 2013, taking Silver in the Absolute world championships. Keenan was promoted to black belt by Andre Galvao and collected two bronze medals at the 2013 ADCC Submission Wrestling World Championships. He has gone on to take gold in the 2014 World No-Gi Championships and is considered the best young America talent in Jiu Jitsu since B.J. Penn.

Yuri Simoes also filled his trophy case on his was to earning his black belt from Ricardo Vieira, the head of Checkmat, in 2011. He is the adopted brother of another BJJ star, Ary Farias, and when Ary left for Atos Yuri followed him. The move was short-lived, Simoes ended up returning to Checkmat and eventually settled down under Caio Terra. Simoes won his weight and absolute at the brown belt No Gi World championships before getting his black belt and since then is a two-time Pan American Champion.

Prediction sure to be wrong

The biggest factor of this match will be if it is a gi or no gi match, at the time of the writing that has yet to be announced. Keenan is famous for his inventive manipulations of the gi, both to apply chokeholds and in his famous lapel and worm guards. Yuri however is the stronger wrestler and is larger, and in their meeting at No-Gi Worlds was better able to leverage those advantages. Neither grappler has submitted the other, and while I expect an entertaining draw in this spot, if someone gets submitted it would be my guess that it would be Keenan getting the win.

Garry Tonon vs Zak Maxwell (No Gi)

The dark-horse for match of the night, this pairs two young, exciting, and aggressive American grapplers against each other in a no gi match sure to thrill.

Who are these guys?

Zak Maxwell is 24-years-old and is a veteran of Metamoris 3 where he drew with Sean Roberts. While it was no a thrilling match, Maxwell has a reputation as a submission oriented fighter on the competition circuit. A Gracie Humaita member, Maxwell was successful in competition in lower belts but is still seeking his breakthrough performance at the black belt level.

Garry Tonon is a black belt under Tom DeBlass and Ricardo Almeida and is just 22-years-old. Tonon is a real hidden treat of the BJJ world was he competes almost exclusively in no gi competitions and plays a game that has almost no regard for point structure of competitions. Tonon seeks to submit opponents and does so with a variety of creative entries and is famed for both his front headlock game and his leg lock attacks.

Prediction sure to be wrong

In this case, while both are outstanding grapplers and Maxwell has a good submission game in his own right, Tonon's game is ideally suited for the open rule, submission only format of Metamoris. Tonon is a serious talent and he'll likely be a player at the 2015 ADCCs, l expect him to get the submission here.

Vinny Magalhaes vs Matheus Diniz (No Gi)

Originally this match was supposed to be Vinny facing the man who replaced him at Metamoris 3 when illness forced him to pull out, Kevin Casey. But this time around Casey was forced to withdraw due to a blood clot earlier this week. Metamoris promoter Ralek Gracie has issued a $10,000 reward for anyone who can step up and submit Vinny Magalhaes, and brown belt Matheus Diniz answered the call.

Who are these guys?

Most MMA fans know Vinny, he was a runner-up on Season Eight of The Ultimate Fighter, had a short run as a UFC fighter, was M-1 Global Light Heavyweight Champion, and is the current Titan Fighting Championships Light Heavyweight Champion. In addition to that Vinny was the 2011 ADCC +99 kg champion, beating current UFC Interim-Heavyweight Champion Fabricio Werdum to claim the title. And in 2009 Vinny took double Bronze at ADCCs when he hit a flying armbar on current UFC Middleweight Champion Chris Weidman and beat Welterweight contender Gunnar Nelson on points.

Matheus Diniz is a star brown belt pupil of grappling great Marcelo Garcia and has been tagged as a rising star in the BJJ world. His game is remarkably similar to his teacher's, focusing on butterfly and x-guard sweeps to expose the back and attacking for chokes from all angles.

Prediction sure to be wrong

There can be no doubt that Diniz is a talented, young grappler, but this is a huge step up for him. Diniz is fresh off wining the BJJ No Gi Worlds and he rolls daily with Marcelo Garica, but moving on to this kind of stage is a garaguation task. Vinny is too good and too experienced to be caught off guard by a young gun coming in on short notice. Expect Vinny to find a submission, possibly his famed heel hook.

Secret Match

The evening kicks off with a secret match, where nobody, not even the competitors who are taking part in it, are aware of the match up until both competitors are on the mat together. At Metamoris 4 they debuted the concept and had Baret Yoshida come out and then announced that he would be facing Metamoris commentator Jeff Glover, who did his best Superman impression, removing his suit to head on to the mat. While it was a draw it was an entertaining match and well-executed concept. It will be a fun way to start off the night.

Stay tuned to Bloody Elbow for full event coverage