UFC Live: Sanchez vs. Kampmann (also known as UFC on Versus 3) was a mixed martial arts event held by the Ultimate Fighting Championship that took place on March 3, 2011, at the KFC Yum! Center in Louisville, Kentucky.^[2][3] The event was broadcast on Versus in the U.S. and Rogers Sportsnet One in Canada. This was the first UFC event to be broadcast in 3D.^[4]

This event was the first UFC event hosted in Kentucky.

Matt Brown was expected to face Mark Scanlon at the event,^[5] but Scanlon was forced off the card^[6] and was to be replaced by Matt Riddle.^[7] However, the match was cancelled after Riddle injured his right hand on January 20.^[8]

Maiquel Falcao was due to take on Alessio Sakara, but pulled out of the bout due to an injury. Rafael Natal was to step in as his replacement,^[9] however on February 12, it was announced that Natal had pulled out of the bout due to a knee injury.^[10] Natal was replaced by Chris Weidman, making his UFC debut at this event. ^[11]

Rousimar Palhares was set to face Alexandre Ferreira. However, on January 18, Ferreira was dismissed from Chute Boxe, his home training camp, citing a "lack of communication."^[12] Less than an hour later, it was reported that Ferreira would not be competing after losing family and friends in the Brazilian floods, resulting in him being in "no condition to train or fight."^[13] and was replaced by David Branch.^[14]

A bout between Johny Hendricks and Paulo Thiago was expected for the event.^[15] However, the bout was canceled after Thiago was forced out with an elbow injury.^[16]

Takeya Mizugaki was scheduled to take on Francisco Rivera, but on February 12, Rivera had to pull out due to an undisclosed training injury.^[17] Mizugaki instead faced UFC newcomer Reuben Duran.^[18]

Cub Swanson was due to take on Erik Koch at this event, but the bout was cancelled after Swanson suffered a training injury.^[19] Koch was instead moved to a fight with Raphael Assunção at UFC 128.^[20]

The Stevenson vs Castillo and Cantwell vs Diabaté bouts streamed on the UFC's official Facebook page.^[21]

Former World Extreme Cagefighting play by play announcer Todd Harris called the 3D broadcast of this event, with UFC featherweight Kenny Florian on color commentary.^[22] They had previously done commentary together at WEC 41 and WEC 49.

The event drew an average of 681,000 viewers on Versus.^[23]

Fighters were awarded $160,000 bonuses each for Fight of the Night^[24] and $40,000 for Knockout/Submission of the Night.^[25]

• Fight of the Night: Diego Sanchez vs. Martin Kampmann
• Knockout of the Night: Shane Roller
• Submission of the Night: Brian Bowles