| Fighter | Nickname | Height | Weight | Association | |
 |
Jorge Vasquez | "George" | 0'0" (0 m) |
170 lbs (77.11 kg) |
One Training Center |
|
Jose Leandro | 5'6" (1.68 m) |
135 lbs (61.23 kg) |
One Nation MMA | |
|
Jose Marcos da Cunha Leal | "Markim Guerreiro" | 5'9" (1.75 m) |
135 lbs (61.23 kg) |
One Six |
|
Jose Augusto Luque | "Guto" | 0'0" (0 m) |
145 lbs (65.77 kg) |
Animal Team / One Fight |
|
Josh Powell | "JP" | 6'3" (1.91 m) |
244 lbs (110.68 kg) |
One Nation Fight Team |
|
Josh Velchansky | 0'0" (0 m) |
155 lbs (70.31 kg) |
One Kick's Gym 559 | |
|
Josh Rebello | 0'0" (0 m) |
155 lbs (70.31 kg) |
Power of One | |
|
Juan Salcedo | 5'3" (1.6 m) |
135 lbs (61.23 kg) |
One Nation MMA | |
|
Juan Medina | 5'9" (1.75 m) |
155 lbs (70.31 kg) |
One Combat Academy | |
|
Juan Gimenez | "Kurepa" | 5'8" (1.73 m) |
135 lbs (61.23 kg) |
Top One |
|
Julian Vargas | 5'10" (1.78 m) |
145 lbs (65.77 kg) |
Force of One | |
|
Juliano Cesar | 0'0" (0 m) |
155 lbs (70.31 kg) |
Strike One | |
|
Jun Abulog | 0'0" (0 m) |
0 lbs (0 kg) |
One Gym | |
|
Junifer Kimmayong | "Junboy Kimay" | 0'0" (0 m) |
115 lbs (52.16 kg) |
The Alpha One |
|
Justin Driggers | "The Grave Digger" | 5'10" (1.78 m) |
170 lbs (77.11 kg) |
One Kick's Gym |
|
Justin Staudermayer | 0'0" (0 m) |
155 lbs (70.31 kg) |
Class One MMA | |
|
Juvencio Ramos Pinheiro Jr. | "Charuto" | 0'0" (0 m) |
145 lbs (65.77 kg) |
Number One / Trinidade Boxing Team / Marajo Brothers Team |
|
Jyoti Jyoti | 5'0" (1.52 m) |
115 lbs (52.16 kg) |
One Punch Club | |
|
Kamran Pilkinton | 5'10" (1.78 m) |
185 lbs (83.91 kg) |
One Nation MMA | |
|
Karan Sati | 5'6" (1.68 m) |
145 lbs (65.77 kg) |
One Punch Club | |
