Tanner Boser vs. Giacomo Lemos Scratched from UFC 240

A failed drug test has nixed the Ultimate Fighting Championship debut of Canadian heavyweight Tanner Boser after his opponent, Giacomo Lemos, tested positive for a banned substance.

Boser (16-5-1) was supposed to make his Octagon debut in his home province in the early prelims of UFC 240. That will no longer happen, as "The Bulldozer" announced on social media that his opponent, Lemos (6-0), has tested positive for an undisclosed substance and is out of their fight. As the event is less than two days away, a replacement could not be sought and Boser was pulled from the card.

"I am absolutely devastated to learn that I will not be fighting in two days at UFC 240. My b*tch made opponent Giacomo Lemos tested positive for a banned substance and it is too late to find a replacement as weigh-ins are tomorrow morning," Boser wrote. "I thought it was strange that Lemos wouldn't make eye contact with me at all whenever I saw him at the hotel. I know now that it's because he's a coward. UFC has told me that they will get me on a future card as soon as they can. I am so so sorry to all my friends and family who paid good money for tickets to come out and watch my UFC debut. I am beyond bummed."

Boser is coming off of a TKO win over Jared Kilkenny in Unified MMA in May. The 27-year-old Absolute Championship Akhmat veteran has beaten the likes of Tim Hague, Rakim Cleveland and Tony Lopez throughout his career. Lemos, meanwhile, was also set to make his UFC debut after dispatching all of his six previous opponents before the final bell.