Jared Papazian replaces an injured Joe Murphy against John Robles at WSOF 4

A rib injury has forced Joe Murphy to pull out of his World Series of Fighting 4 bout against John Robles and replacing him in the bout will be former UFC fighter Jared Papazian. WSOF 4 Poster #2

WSOF officials announced the change on Monday and the new bout will take place on the preliminary card.

WSOF 4 will take place on August 10th from the Citizens Business Bank Arena in Ontario, California and will be headlined by Tyrone Spong meeting Angel DeAnda in a light heavyweight bout.

Papazian (15-10, 1NC) has gone 1-1 since exiting the UFC in late 2012 an was defeated in his last fight against Brandon Bender at Nation Fight Alliance.

Robles (7-1) will be making his WSOF debut in this bout and six of his seven wins have come by TKO/KO. He has won back to back fights and he is coming off a first round knockout victory in March against Steven Barajas at MEZ Sports Pandemonium 8.

The current WSOF 4: Spong vs. DeAnda fight card is below:

Main Card: (NBC Sports Network – 10:30 p.m ET/7:30 p.m. PT)
Tyrone Spong (1-0) vs. Angel DeAnda (11-2)
Marlon Moraes (10-4-1) vs. Brandon Hempleman (9-1)
Ray Sefo (2-1) vs. Dave Huckaba (20-5)
Nick Newell (9-0) vs. Keon Caldwell (9-1)
Tyson Griffin (16-6) vs. Gesias Cavalcante (17-7-1)

Preliminary Card: (WSOF.com – 8 p.m. ET/5 p.m. PT)
Jorge Santiago (25-11) vs. Gerald Harris (21-5)
Antonio McKee (28-5-2) vs. Lewis Gonzalez (8-0)
Lew Polley (12-4) vs. Hans Stringer (21-5-2)
Jared Papazian (15-10, 1NC) vs. John Robles (7-1)
Isaac Gutierrez (5-3) vs. Victor Valenzuela (12-6-2)