Jonathan Cruz Tuck (born August 28, 1984) is a Chamorro professional mixed martial artist.
Tuck is the first Chamorro native from Guam to be signed by the Ultimate Fighting Championship, and competes at the Lightweight division.
Tuck began training in Brazilian jiu-jitsu and MMA with his cousin, about six years before coming to the UFC.
[4] Tuck made his professional debut in 2007, earning his first win over Joe Nauta via rear-naked choke early in the first round.
Despite having a knee injury, Tuck competed in the -78 kg division placing second, which secured him the silver medal.
After competing in Brazilian jiu-jitsu tournaments all over the world, Tuck finally returned to MMA, defeating former Strikeforce fighter Tristan Arenal.
[8] In his first fight, Tuck lost via unanimous decision to eventual finalist Al Iaquinta in the elimination round to get into the house.
[9] Tuck made his official promotional when he faced Zhang Tiequan on November 10, 2012, at UFC on Fuel TV 6.
[15] However, Cedeno pulled out of the bout in early May citing an injury and was replaced by promotional newcomer Jake Lindsey.
[26] However, Baghdad pulled out of the fight in mid-September citing injury and was replaced by promotional newcomer Alex Volkanovski.
[36] Eventually only a week before the fight, Girtz withdrew from the bout due to an injury leading to Tuck being removed from the card as well.