Jeff Cobb

Jeff Cobb
Cobb in 2019
Personal information
BornJeffrey Cobb
(1982-07-11) July 11, 1982
Professional wrestling career
Ring name(s)El Jéfe Cobbo
JC Mateo
Jeff Cobb
Matanza
Matanza Cueto
Billed height5 ft 10 in (178 cm)
Billed weight264 lb (120 kg)
Billed fromHonolulu, Hawaii
Trained byOliver John
DebutJune 4, 2009
Amateur wrestling career
Nickname
Mr. Athletic
Nationality Guam
Height1.78 m (5 ft 10 in)
Weight84 kg (185 lb)
StyleFreestyle
ClubGuam Amateur Wrestling
Federation
CoachNeil Krantz

Jeffrey Cobb (ジェフリー・コブ, Jefurī Kobu; born July 11, 1982) is an American professional wrestler and former amateur wrestler. As of May 2025, he is signed to WWE, where he performs on the SmackDown brand under the ring name JC Mateo. He is a member of The MFT stable. He is best known for his tenure in New Japan Pro-Wrestling (NJPW), where he performed under his real name and was a member of United Empire.

In NJPW, he is a former one-time NEVER Openweight Champion, one-time NJPW World Television Champion, and a three-time IWGP Tag Team Champion. He also wrestled for various promotions, such as Lucha Underground (as the masked wrestler Matanza Cueto) where he is a former one-time Lucha Underground Champion, Ring of Honor (ROH) where he is a former one-time ROH Television Champion, as well as Pro Wrestling Guerrilla (PWG) where he is a former one-time PWG World Champion, one-time PWG World Tag Team Champion and is also the winner of the 2018 Battle of Los Angeles.

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. He transitioned to professional wrestling in 2009.