UFC welterweight Matt Riddle has certainly had an interesting month after having to withdraw from a bout at UFC 141 on the day of the event due to an undisclosed illness, then stepping up on late notice to fill a vacancy at this weekend’s UFC 143 lineup. Now his revolving door of opponents has taken another turn after Jorge Lopez was injured in a training session and forced out of their scheduled bout.

News of the situation was confirmed by the UFC where it was reported Henry Martinez would take Lopez’s spot on the February 4 card. The match-up will mark Martinez’s debut in the organization.

Martinez, who often fights as a lightweight, is 8-1 in his career and comes out of Greg Jackson’s camp in New Mexico. He is currently on a four-fight winning streak with the entire quartet involving some form of finish including in a bout taking place a little more than a week ago.

Comparably, the 5-3 Riddle has fallen in his last two outings with a pair of decision defeats. All eight of his fights have occurred under the UFC banner.

UFC 143: Condit vs. Diaz features Carlos Condit-Nick Diaz duking it out in the main event for the right to be named interim welterweight champion. Other fights include Josh Koscheck-Mike Pierce and Roy Nelson-Fabricio Werdum. PPV action starts at 10:00 PM EST with prelims showing on Facebook (7:00 PM EST) and FX (8:00 PM EST).