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UFC flyweight Rogerio Bontorin tests positive for diuretic

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MMA: UFC 262-Weigh Ins
Rogerio Bontorin missed weight for a short-notice bantamweight bout at UFC 262.
Troy Taormina-USA TODAY Sports

Rogerio Bontorin tested positive for a diuretic and will be forced to stay on the sidelines for some time, MMA Fighting has confirmed following a report from Combate.

According to the report, the United States Anti-Doping Agency (USADA) found hydrochlorothiazide, a banned diuretic, in an out-of-competition sample from early May. A source on Bontorin’s team said they are working to prove it was caused by a tainted supplement, hoping to reduce his suspension to six months.

Bontorin last fought in May 15, winning a decision over Matt Schnell in a short-notice bantamweight bout. The Brazilian fighter, who missed weight at 137 pounds for that bout, is currently ranked No. 8 in the official UFC flyweight list.

A long list of UFC fighters have tested for hydrochlorothiazide in the past. Former champions Anderson Silva and Junior dos Santos, as well as Jennifer Maia, Antonio Rogerio Nogueira and Guido Cannetti, were able to prove tainted supplements as source of contamination.

Bontorin (17-3, 1 no contest) joined the UFC through Dana White’s Contender Series in 2018 and won back-to-back fights over Magomed Bibulatov and Raulian Paiva the following year before losses to Ray Borg and Kai Kara-France.