George Tiller to term would cause the woman "substantial and irreversible impairment of a major bodily function". His practice frequently made him the focus of anti-abortion groups. The Kansas Coalition for Life kept a daily vigil outside Tiller's facility from May 9, 2004, until May 31, 2009. The group known as Operation Rescue held an event called 'The Summer of Mercy' in July and August 1991, focusing on Tiller's clinic but also protesting other abortion providers in Wichita, Kansas. Years later, a branch that split from the main Operation Rescue group moved from California to Kansas specifically to focus on Tiller, initially
Kelvin Tiller 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. 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