After compiling a 52–12 amateur record over four years and achieving the number one ranking, Kauffman made his professional debut in 2006. He won via second-round KO. On December 5, 2008, Kauffman made his national TV debut with a third-round knockout (KO) of once-beaten Malachy Farrell (who outweighed Kauffman by 60 lb) on
ShoBox: The New Generation. Kauffman followed up with a pair of early knockouts against
clubfighters
Cliff Couser and southpaw Livin Castillo. In 2009, he was knocked out by
Tony Grano. Kauffman asked Grano for a rematch but was turned down several times. He then fought Mike Miller, winning a shut-out unanimous decision (UD). Kauffman followed this up with a two-round knockout of Chris Koval and picked up the WBF intertitle. This led to a promotional agreement with Empire Sports and Entertainment. Kauffman was released by Empire and then re-signed in 2012 with the same promoter using the name Greg Cohen Promotions. Kauffman was then 21–1 with 16 KOs. On December 17, 2010, he fought Ross Thompson and won by
DQ. He then fought Sean Williams, whom he knocked out in one round. Kauffman fought
Charles Davis, winning a seven-round UD, as the fight was stopped due to rain. In February 2013, Kauffman vs Willie Perryman ended in a second-round knockout win that put Kauffman to 24–1, with 18 KOs. At that time, he was ranked 14th by the
WBA. Kauffman won an eight-round unanimous decision over Arron Lyons in August 2013. Then in September 2013 Kauffman beat Stacy Frazier in two short rounds, breaking Frazier's ribs, to move to 26–1, 19 KOs, and was ranked 10th by the WBA. Kauffman fought Jason Barnett on November 30, 2013, breaking his ribs in the fight but earning a first-round knockout win and the WBU interim heavyweight title. Kauffman took on Vincent Thompson on January 25, 2014, out-working him over ten rounds and winning the WBA federation title that became Kauffman's third minor belt. Kauffman is currently on a 10-fight win streak. Kauffman has started to work with trainer Nassim Richardson and has help from Al Cole, a former cruiserweight title holder. A December 15, 2015 fight against world title challenger
Chris Arreola was ruled a majority decision for Arreola but was later changed to no contest. Kauffman and a significant number of media outlets felt he had won the fight. At Santander Arena, in his hometown of
Reading, Pennsylvania on September 9, 2016, Kauffman scored a second-round TKO over Josh Gormley. On March 17, 2017, Kauffman fought
Amir Mansour in a
Fight of the Year candidate, losing via split decision. Kauffman then faced former interim
WBA Heavyweight Champion
Luis Ortiz, in his second fight since being handed his first professional defeat at the hands of
Deontay Wilder. Kauffman was defeated via tenth-round TKO. ==Personal life==