Stephen 'Wonderboy' Thompson injures knee, out of UFC 154

Esther Lin, MMA Fighting

The UFC injury bug continues to rear its ugly head.

Welterweight prospect Stephen "Wonderboy" Thompson has pulled out of his UFC 154 fight against Besam Yousef due to an injured knee, MMAFighting.com confirmed with sources close to the fight. Thompson recently suffered a torn meniscus in training. He will undergo surgery on Monday and is expected to be out of action for eight weeks.

Thompson (6-1) suffered the first loss of his career at UFC 145 against Matt Brown. He won his Octagon debut at UFC 143 when he knocked out Dan Stittgen via a highlight-real head kick.

The UFC has yet to confirm the injury, as well as announce who, if anyone, will replace Thompson against Yousef.

UFC 154, headlined by Georges St-Pierre vs. Carlos Condit for the undisputed UFC welterweight title, takes place Nov. 17 from the Bell Centre in Montreal.

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