The scheduled light heavyweight bout for UFC on FOX 20 between Anthony Johnson and Glover Teixeira has been postponed and the new co-main event of the July 23 fight card in Chicago will be the previously scheduled lightweight bout between Gilbert Melendez and Edson Barboza.

UFC officials announced the change on Friday afternoon in a statement and stated that “Johnson has been forced to withdraw in order to tend to a serious family matter.”

UFC on FOX 20 will come from the United Center and will be headlined by former UFC women’s bantamweight champion Holly Holm returning for the first time since losing the title in March as she faces Valentina Shevchenko.

Along with announcing that Melendez vs. Barboza is the new co-main event of the fight card, the UFC revealed that the other two fights that will be part of the four fight main card areĀ Francis Ngannou vs. Bojan Mihajlovic andĀ Felice Herrig vs. Kailin Curran.

The current UFC on FOX 20: Holm vs. Shevchenko fight card is below.

Main Card: (FOX – 8 p.m. ET/5 p.m. PT)
Holly Holm (10-1) vs. Valentina Shevchenko (12-2)
Edson Barboza (17-4) vs. Gilbert Melendez (22-5)
Francis Ngannou (7-1) vs. Bojan Mihajlovic (10-3)
Felice Herrig (10-6) vs. Kailin Curran (4-2)

Preliminary Card (Broadcast – TBA)
Alex Oliveira (13-3-1) vs. James Moontasri (9-3)
Hector Urbina (25-9) vs. George Sullivan (17-5)
Luis Henrique (8-2) vs. Dmitry Smolyakov (8-0)
Frankie Saenz (11-3) vs. Eddie Wineland (21-11-1)
Darren Elkins (20-5) vs. Godofredo Pepey (13-3)
Tony Martin (10-3) vs. Michel Prazeres (19-2)
Jim Alers (13-2, 1NC) vs. Jason Knight (13-2)
Kamaru Usman (7-1) vs. Alexander Yakovlev (23-6-1)