On September 10, 2011, Tiller made his professional MMA debut against Jeb Chiles at Shark Fights 19. Tiller won the fight by submission at the end of the first round.
Bellator
Tiller made his Bellator debut on October 29, 2011 at Bellator 56 against Daniel Spohn. Tiller defeated Spohn via split decision. In his next appearance for Bellator, Tiller faced Jeremiah Riggs at Bellator 70 on May 25, 2012. Tiller won the fight by submission in the third round. Tiller then stepped in as a replacement for an injured Marcus "Lelo" Aurelio and defeated Amaechi Oselukwue via second-round TKO at Bellator 73 on August 24, 2012. Tiller was expected to face Dave Vitkay at Bellator 88 on February 7, 2013. However, when Tiller failed to make weight for the third consecutive time, the bout was cancelled and Tiller was subsequently released from his Bellator contract.
Post-Bellator
After parting ways with Bellator, Tiller faced Chris Henning on June 29, 2013 at Epic Fight Night 1: Stinson vs. Kimmons. Tiller won via submission in round one.
In November 2013, Tiller signed a multi-fight deal with World Series of Fighting. Tiller was scheduled to face Ronny Markes at on August 9, 2014, but when Krasimir Mladenov pulled out of his fight with Elvis Mutapcic due to injury on the same card, Tiller stepped in as a replacement. As a result, Markes ended up fighting promotional newcomer Cully Butterfield. Tiller was handed his first professional defeat by Mutapcic via three-round unanimous decision.
Personal life
Tiller went to Topeka High high school and Highland Park High in Topeka, Ks after high school he went to Allen County Community College for track. He was raised by a single mother Patricia Rains as they moves around between Kansas City and Topeka most of his childhood. He is the youngest of 4 children and has 3 older sisters Patricia Tiller, Tierra Tiller, and Autumn Tiller. He has always been a family oriented man with his Grandmother Grandfather and Uncle helping with his up bringing. Tiller himself has 3 sons and 4 daughters having his first child at the age of 16. While growing up on the streets of Topeka he had to grow up fast so fighting became natural for him. His mission in life is to make sure his family is taken care of. On October 4, 2018 Tiller lost a major factor in his life, the man that thought him everything in life his grandfather Harrison Irons Sr. the day before his October 5 fight for PFL. Tiller is a major influencer in his community. He mentors the young kids, telling them that there is more out there in life; and that you can be what ever you want to be in life as long as you put your all into it.
