Devin Haney
Boxing: Devin Haney and Joseph Diaz at Las Vegas SignNovember 30, 2021; Las Vegas, Nevada; Devin Haney at the Las Vegas sign ahead of his bout versus Joseph Diaz on the Matchroom Boxing card at MGM Grand Garden Arena on December 4, 2021. Mandatory Credit: Melina Pizano/Matchroom.
Media day on Wednesday, December 1, 2021 in Las Vegas, Nevada.
Jessica McCaskill
Boxing: Devin Haney and Joseph Diaz Media DayDecember 1, 2021; Las Vegas, Nevada; Behind the scenes on media day of Jessica McCaskill ahead of her bout on the Matchroom Boxing card at MGM Grand Garden Arena on December 4, 2021. Mandatory Credit: Melina Pizano/Matchroom.
Media workout on Wednesday, December 1, 2021 in Las Vegas, Nevada.
Joseph Diaz
Boxing: Devin Haney and Joseph Diaz Media WorkoutDecember 1, 2021; Las Vegas, Nevada; Joseph Diaz works out for the media ahead of the Matchroom Boxing card at MGM Grand Garden Arena on December 4, 2021. Mandatory Credit: Melina Pizano/Matchroom.
Boxing: Devin Haney and Joseph Diaz Media WorkoutDecember 1, 2021; Las Vegas, Nevada; Joseph Diaz works out for the media ahead of the Matchroom Boxing card at MGM Grand Garden Arena on December 4, 2021. Mandatory Credit: Melina Pizano/Matchroom.
Marc Castro
Boxing: Devin Haney and Joseph Diaz Media WorkoutDecember 1, 2021; Las Vegas, Nevada; Marc Castro works out for the media ahead of the Matchroom Boxing card at MGM Grand Garden Arena on December 4, 2021. Mandatory Credit: Melina Pizano/Matchroom.
Final press conference on Thursday, December 2, 2021 in Las Vegas, Nevada.

Weigh-in day on Friday, December 3, 2021 in Las Vegas, Nevada.
Boxing: Devin Haney and Joseph Diaz Weigh-InDecember 3, 2021; Las Vegas, Nevada; Devin Haney weighs in ahead of his bout on the Matchroom Boxing card at MGM Grand Garden Arena on December 4, 2021. Mandatory Credit: Melina Pizano/Matchroom.
Boxing: Devin Haney and Joseph Diaz Weigh-InDecember 3, 2021; Las Vegas, Nevada; Devin Haney and Joseph Diaz Jr. pose after weighing in ahead of their bout on the Matchroom Boxing card at MGM Grand Garden Arena on December 4, 2021. Mandatory Credit: Melina Pizano/Matchroom.
Fight night on Saturday, December 4, 2021
at the MGM Grand Garden Arena in Las Vegas, Nevada.
Amari Jones
Boxing: Devin Haney and Joseph Diaz Jr. Fight NightDecember 4, 2021; Las Vegas, Nevada; Amari Jones prepares for his bout at MGM Grand Garden Arena on December 4, 2021. Mandatory Credit: Melina Pizano/Matchroom.
Marc Castro
Boxing: Devin Haney and Joseph Diaz Jr. Fight NightDecember 4, 2021; Las Vegas, Nevada; Marc Castro prepares for his bout at MGM Grand Garden Arena on December 4, 2021. Mandatory Credit: Melina Pizano/Matchroom.
Jessica McCaskill
Boxing: Devin Haney and Joseph Diaz Jr. Fight NightDecember 4, 2021; Las Vegas, Nevada; Jessica McCaskill prepares for her bout against Kandi Wyatt at MGM Grand Garden Arena on December 4, 2021. Mandatory Credit: Melina Pizano/Matchroom.
Montana Love
Boxing: Devin Haney and Joseph Diaz Jr. Fight NightDecember 4, 2021; Las Vegas, Nevada; Montana Love prepares for his bout at MGM Grand Garden Arena on December 4, 2021. Mandatory Credit: Melina Pizano/Matchroom.
Devin Haney defeats Joseph Diaz by unanimous decision.
Boxing: Devin Haney and Joseph Diaz Jr. Fight NightDecember 4, 2021; Las Vegas, Nevada; Devin Haney and Joseph Diaz Jr. during their December 4, 2021 bout at MGM Grand Garden Arena. Mandatory Credit: Melina Pizano/Matchroom.
Boxing: Devin Haney and Joseph Diaz Jr. Fight NightDecember 4, 2021; Las Vegas, Nevada; Devin Haney and Joseph Diaz Jr. during their December 4, 2021 bout at MGM Grand Garden Arena. Mandatory Credit: Melina Pizano/Matchroom.
Boxing: Devin Haney and Joseph Diaz Jr. Fight NightDecember 4, 2021; Las Vegas, Nevada; Devin Haney and Joseph Diaz Jr. during their December 4, 2021 bout at MGM Grand Garden Arena. Mandatory Credit: Melina Pizano/Matchroom.
Boxing: Devin Haney and Joseph Diaz Jr. Fight NightDecember 4, 2021; Las Vegas, Nevada; Devin Haney and Joseph Diaz Jr. during their December 4, 2021 bout at MGM Grand Garden Arena. Mandatory Credit: Melina Pizano/Matchroom.
Boxing: Devin Haney and Joseph Diaz Jr. Fight NightDecember 4, 2021; Las Vegas, Nevada; Devin Haney and Joseph Diaz Jr. during their December 4, 2021 bout at MGM Grand Garden Arena. Mandatory Credit: Melina Pizano/Matchroom.
Boxing: Devin Haney and Joseph Diaz Jr. Fight NightDecember 4, 2021; Las Vegas, Nevada; Devin Haney and Joseph Diaz Jr. during their December 4, 2021 bout at MGM Grand Garden Arena. Mandatory Credit: Melina Pizano/Matchroom.
Boxing: Devin Haney and Joseph Diaz Jr. Fight NightDecember 4, 2021; Las Vegas, Nevada; Devin Haney and Joseph Diaz Jr. during their December 4, 2021 bout at MGM Grand Garden Arena. Mandatory Credit: Melina Pizano/Matchroom.
Boxing: Devin Haney and Joseph Diaz Jr. Fight NightDecember 4, 2021; Las Vegas, Nevada; Devin Haney after his bout with Joseph Diaz Jr. on December 4, 2021 at MGM Grand Garden Arena. Mandatory Credit: Melina Pizano/Matchroom.