Born in Anaheim, Siler moved to Utah from a young age alongside his Father Michael Siler Sr mother cathy Siler brother Michael Siler Jr and sister Tara Siler. Siler was unable to compete in wrestling during high school due to poor grades, but made the move to MMA after graduating.
Siler had a nine-fight winning streak with wins over Bellator veterans, Travis Marx and Nick Mamalis. Siler then accepted a bout with future UFC featherweight title challenger, Chad Mendes, at Tachi Palace Fights: Best of Both Worlds. Siler lost the fight inside the first minute of round one via KO. Siler returned Throwdown MMA, claiming the featherweight title after beating Enoch Wilson. Siler won three more fights after winning the Throwdown title before challenging Cole Escovedo at Showdown Fights: New Blood. Siler lost the fight via submission in the first round.
In 2011, Siler had signed with the Ultimate Fighting Championship to compete on. In the first episode, Siler gained entry into the house after defeating, Micah Miller, via submission at 0:53 of the third round. Siler was picked to be part of Team Miller. In the sixth episode, he did not make the semi-finals, as he lost to Diego Brandao via KO due to a flying knee 30 seconds into the first round.
Ultimate Fighting Championship
Siler was signed to a contract with the UFC. Siler was originally scheduled to fight Akira Corassani on December 3, 2011 at The Ultimate Fighter 14 Finale. However, Corassani was forced out with an injury and replaced by Josh Clopton. Siler defeated Clopton via unanimous decision. Siler next faced Cole Miller at UFC on FX 2 on March 2, 2012. Siler won the fight via unanimous decision. Siler was expected to face Jimy Hettes at UFC on FX 4. However, Hettes was forced out of the bout with an injury and Siler instead faced UFC newcomer Joey Gambino. He won the fight via submission in the first round. Siler lost a unanimous decision to Darren Elkins on November 17, 2012 at UFC 154. Siler was expected to face Jimy Hettes on April 27, 2013 at UFC 159. However, Hettes was forced out of the bout with an injury and replaced by Kurt Holobaugh. Siler won the back-and-forth bout via unanimous decision. Siler faced Mike Brown on August 17, 2013 at UFC Fight Night 26. He won the fight via knockout just 50 seconds into the first round. Siler faced Dennis Bermudez on November 6, 2013 at UFC Fight Night 31. He lost the fight via unanimous decision. Siler faced Rony Jason on March 23, 2014 at UFC Fight Night 38. He lost the fight via a controversial TKO stoppage in the first round. Siler was initially dropped by two punches from Jason. Siler, having his back on the mat, immediately throw an up-kick as soon as Rony proceeded to walk toward him. At the very same time the referee stepped in to stop the fight as a conscious Siler was attempting to defend himself. Siler faced Noad Lahat on July 26, 2014 at UFC on Fox 12. He lost the fight via unanimous decision, and was subsequently released from the promotions shortly after.
In October 2014, it was announced that Siler had signed a contract with Titan Fighting Championship. After Desmond Greenknocked outMiguel Torres, it was announced that Siler would face Green for the vacant Featherweight championship. The fight took place at Titan FC 32 on December 19, 2014 and Siler lost via unanimous decision.
