Career
Robertson excelled in wrestling, where he was a three time National Collegiate Athletic Association Division I qualifier for Eastern Illinois University. While competing for the Panthers he was a four time West Regional conference finalist. As a junior in 2006, he was one match away from being an All American at the National Collegiate Athletic Association championships.
His senior year was the last year that Eastern Illinois University sponsored a wrestling program, making Robertson the last National Collegiate Athletic Association qualifier the school ever had.
Early career
Ultimate Fighting Championship
Robertson was expected to make his UFC debut against fellow unbeaten fighter, Pascal Krauss on November 13, 2010, at UFC 122. However, Robertson was forced out of the bout with an injury and replaced by Mark Scanlon.
Robertson eventually made his UFC debut on February 5, 2011 at UFC 126, losing to Mike Pierce via TKO in the second round. Following the loss, Robertson was released from the promotion.
Post-UFC
Robertson had his first post-UFC fight against fellow UFC veteran Lúcio Linhares on October 1, 2011.
Return to UFC
Robertson made his UFC return against Aaron Simpson on July 11, 2012 at UFC on Fuel television: Munoz versus Weidman, replacing an injured Jon Fitch. He lost the fight via unanimous decision (30-27, 29-28, 29-28).
Robertson defeated Brock Jardine on February 23, 2013, at UFC 157.
He was victorious in the first round after applying a unique leglock from back control getting the submission. The finish earned him the Submission of the Night bonus.
The "kickstand" applies pressure to the hamstring of the opponent by grabbing the ankle and hyperextending at the knee. Robertson faced Sean Pierson on June 15, 2013 at UFC 161.
Pierson defeated Robertson via majority decision.
Robertson was expected to face Joao Zeferino on September 4, 2013 at UFC Fight Night 28. However, Robertson pulled out of this bout citing and injury and was replaced by UFC newcomer Elias Silverio. Robertson faced Thiago Perpétuo on March 23, 2014 at UFC Fight Night 38.
Robertson was briefly linked to a bout with Zak Cummings on July 16, 2014 at UFC Fight Night 45.
Subsequently, Robertson eventually faced Ildemar Alcântara on July 5, 2014 at UFC 175. Robertson faced Sultan Aliev on January 24, 2015 at UFC on Fox 14.
Robertson was expected to face George Sullivan on April 18, 2015 at UFC on Fox 15. However, Robertson pulled out of the bout citing injury and was replaced by Tim Means.
Robertson faced Ben Saunders on July 25, 2015 at UFC on Fox 16.
He lost the back-and-forth fight by split decision. Ultimate Fighting Championship
Performance of the Night (One time)
Submission of the Night (One time).
