After a troublesome childhood, Lyman's mother felt getting her son involved in martial arts would be a good way for him to release his anger.
Good controlled the fight on the ground in the second round, gained an edge in the stand-up in the third, and won via unanimous decision.
[11] In addition to MMA bouts, Good participated in three kickboxing matches in Chuck Norris's World Combat League, winning all three.
Lyman scored a takedown early in the first round, trapped De La Cruz against the cage, and pounded his way to a TKO victory.
On March 5, 2011, Good debuted in Bellator's fourth season welterweight tournament quarterfinals against prospect Chris Lozano, He won the fight via unanimous decision.
On April 2, 2011, In the Semifinals, Good faced Judo specialist Rick Hawn at Bellator 39, losing a controversial split decision and exiting the tournament.
[20] On April 13, 2012, Good faced LeVon Maynard in a qualifying bout at Bellator 65 for Season Seven's Welterweight tournament winning via KO in just 13 seconds of round one.
On September 28, 2012, Good faced UK fighter Jim Wallhead at Bellator 74 in a Quarterfinal bout of Season Seven winning via unanimous decision.
On October 26, 2012, Good faced Michail Tsarev at Bellator 78 in the Semifinals winning via TKO due to punches in the second round.
Good made his promotional debut as a short notice replacement against Andrew Craig on July 15, 2015 at UFC Fight Night 71, filling in for an injured Edgar Garcia.
[28] However, on October 24, Good was pulled from the card after being notified by USADA due to a potential anti-doping violation stemming from an out-of-competition sample collected ten days earlier.
[31] After over two years away from the sport, Good returned to face Elizeu Zaleski dos Santos on July 22, 2017 at UFC on Fox 25.
[47] Good filed two complaints suing Gaspari Nutrition, Hi-Tech Pharmaceutials, Vitamin Shoppe and Millennium Sport Technologies for breach of express warranty (sales contract), false advertising, deceptive practices and assault.