The first-ever Ultimate Fighter winner, Diego Sanchez, won’t be competing on May 8 against Donald Cerrone in a bout which had been billed as the last of the MMA veteran’s career.

No official reason has yet been given for Sanchez’s withdrawal but it has been confirmed by several sources following an initial report by Carlos Contreras Legaspi, as noted by MMA Fighting.

A search for a replacement opponent has commenced, with the likes of Kevin Holland and Emil Meek saying online that they would be willing to step in and fill the gap for the card to take place next weekend.

The fight was to be one between two of the longest-tenured members of the UFC roster, and two fighters who made their mark on the mixed martial arts landscape under the stewardship of Greg Jackson.

This is the second piece of bad luck to hit next weekend’s card in as many days after it was revealed earlier this week that T.J. Dillashaw was forced to withdraw from his upcoming fight with bantamweight contender Cory Sandhagen after receiving a bad cut due to a clash of heads in training.

The new main event, for now at least, stands as a women’s strawweight contest between Michelle Waterson and Marina Rodriguez.