Gilbert Melendez was suspended for one year by the UFC for failing a post-fight drug test after UFC 188 last month in Mexico City, the promotion announced Monday.
Melendez (22-5) tested positive for testosterone metabolites from an external source after his split-decision loss to Eddie Alvarez.
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The suspension is effective as of the fight date, which was June 13. Melendez was removed from next Wednesday's lightweight bout against Wantagh's Al Iaquinta a UFC Fight Night in San Diego.
"Regrettably, I tested positive in my post fight urine sample for UFC 188," Melendez said. "I did not inject anything, but I am responsible and accept the consequences for the results. I will make sure I am better educated about the products I use and their implications. Going forward I will ensure no products I use will contain banned substances. I am sincerely apologetic to everyone who supports me, including my fans, sponsors and the UFC. I value your trust and respect and will do everything in my power to keep it."
Iaquinta, who has won four straight fights, was removed from the card as well, which takes place July 15. He originally was scheduled to fight Bobby Green in San Diego, but he pulled out with an injury last month, allowing Melendez to step in as a replacement.
Josh Thomson vs. Tony Ferguson becomes the co-main event for the card headlined by heavyweighs Frank Mir and Todd Duffee.
Scott Jorgensen vs. Manny Gamburyan was moved up from the prelims to the main card on Fox Sports 1 beginning at 10 p.m. ET.