UFC Fight Night: Shogun vs. Sonnen (also known as UFC Fight Night 26) was a mixed martial arts event held on August 17, 2013 at the TD Garden in Boston.

The event was the first UFC event broadcast on Fox Sports 1.

The main event was contested between former UFC Light Heavyweight Champion Maurício Rua and Chael Sonnen. The bout was first linked to UFC 161, as Sonnen was mentioned as a short notice replacement for Rua's original opponent Antônio Rogério Nogueira, who was out of the bout with a back injury. Visa issues prevented Sonnen from getting into Canada, resulting in Rua being pulled from the event altogether.

Nick Ring was expected to face Uriah Hall at the event. However, Ring was pulled from the bout and replaced by Josh Samman Samman was subsequently forced from the bout and replaced by returning UFC fighter John Howard.

Akira Corassani was expected to face Mike Brown at the event; however, Corassani pulled out of the bout and was replaced by Steven Siler.

Thiago Alves was expected to face Matt Brown at the event; however, Alves pulled out of the bout citing an injury and was replaced by Mike Pyle.

Andy Ogle was expected to face Conor McGregor at the event; however, Ogle pulled out of the bout citing an injury and was replaced by Max Holloway.

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