He received two straight losses due to technical superiority and no classification points in a preliminary pool match against Cuba's Yoel Romero and Germany's Davyd Bichinashvili, finishing 21st overall out of 22 wrestlers.
1982
Jeffrey Cobb (ジェフ・コブ Jefu Kobu, born July 11, 1982) is an American professional wrestler and former amateur wrestler currently signed to New Japan Pro-Wrestling (NJPW), where he is a member of the United Empire stable.
Prior to coming to NJPW, Cobb wrestled in Lucha Underground (as the masked wrestler Matanza Cueto), Ring of Honor (ROH) and Pro Wrestling Guerrilla (PWG).
2004
As an amateur wrestler, Cobb represented Guam at the 2004 Summer Olympics, where he became the nation's flag bearer in the opening ceremony and competed in the men's light heavyweight freestyle category.
Cobb qualified for the Guamanian squad in the men's 84 kg class at the 2004 Summer Olympics in Athens by receiving a continental berth from the Oceanian Championships in Dededo.
2009
He transitioned to professional wrestling in 2009.
During his amateur wrestling career, Cobb trained for the Guam Amateur Wrestling Federation under his personal coach Neil Krantz.
Cobb began professional wrestling in 2009 working for Action Zone Wrestling in Hawaii.
He won the AZW Heavyweight Title a record setting three times.
He made appearances for many independent promotions in Northern California such as All Pro Wrestling, Supreme Pro Wrestling, Pro Wrestling Bushido, Fighting Spirit Pro, Phoenix Pro Wrestling and PREMIER Wrestling, where he held their heavyweight championship for 427 days.
2014
In September 2014, he received a tryout at the WWE Performance Center.
2015
Cobb signed to Lucha Underground in 2015.
2016
He debuted for the promotion on March 22, 2016, under a mask and the ring name "The Monster" Matanza Cueto, the storyline brother of Dario Cueto, winning the Lucha Underground Championship in his first match.
Matanza remained undefeated until April 9, 2016, when he was pinned by Rey Mysterio in an Aztec Warfare match, losing the Lucha Underground Championship in the process.
On May 20, 2016, Cobb made his debut for Pro Wrestling Guerrilla (PWG), losing to Chris Hero.
On September 2, Cobb entered the 2016 Battle of Los Angeles, from which he was eliminated in the first round by Ricochet.
On December 16, 2016, Cobb and Matt Riddle defeated The Young Bucks.
Cobb and Riddle were later known in PWG as "The Chosen Bros".
2017
On February 18, 2017, Cobb and Riddle would defeat the Unbreakable F'n Machines (Brian Cage and Michael Elgin).
On March 18, 2017, the team would beat OI4K (Dave Crist and Jake Crist).
On April 21, 2017, Cobb, in singles action, would defeat Keith Lee.
On May 19, 2017, The Chosen Bros defeated reDRagon (Kyle O'Reilly and Bobby Fish).
On October 20, The Chosen Bros defeated the Lucha Brothers (Rey Fenix and Penta el Zero M) to win the PWG World Tag Team Championship.
On May 27, 2017, Cobb made his Progress Wrestling debut by defeating Nathan Cruz in the first round of the Super Strong Style 16 Tournament 2017.
The following day, Cobb lost his second round match to Matt Riddle.
On May 29, Cobb received his first shot at the Progress World Championship, losing to Pete Dunne.
2018
He is a former PWG World Champion and is also the winner of PWG's 2018 Battle of Los Angeles tournament and a former one-time World Tag Team Champion with Matt Riddle.
In NJPW, he is also a former NEVER Openweight Champion and a two-time IWGP Tag Team Champion (with Great-O-Khan).
In ROH, he is a former ROH Television Champion.
His character was killed off in the fourth season, which aired in 2018.
They retained the titles until April 20, 2018, when they lost them against The Rascalz (Zachary Wentz and Dezmond Xavier).
On September 15–16, 2018, he went on to win the 2018 Battle of Los Angeles, defeating Darby Allin in the first round, Rey Horus in the second round, Trevor Lee in the third round, and Shingo Takagi and Bandido in the final.
On October 19, Cobb defeated Walter at Smokey and the Bandido to win the PWG World Championship.
2019
Despite this, it was reported in April 2019 that Cobb was seeking legal action to be released from his Lucha Underground contract.
This came after similar motions from others on the show, including King Cuerno and Joey Ryan.
More days later, it would be confirmed that he had been released from the company.
He then successfully defended it against Trevor Lee at Hand of Doom in January 2019.
He would also successfully defend his title against Jonathan Gresham and BOLA runner up Bandido during his reign.
He then competed in his 4th Battle of Los Angeles but fell in the second round to David Starr.
He would go on to drop the title after 421 days in a rematch with eventual tournament winner Bandido later that year.
