Lamas graduated with a degree in exercise science from Elmhurst College in 2005, where he was a member of the men's wrestling team and earned All-American honors at the NCAA Division III Men's Wrestling Championships at 157 lbs. During his collegiate wrestling career (2001–2005), he racked up over 100 wins. He was also a two-time CCIW Champion, and was named the CCIW's "Most Outstanding Wrestler" during the 2003–04 season. Lamas returned to Elmhurst after graduation to serve as the assistant men's wrestling coach.[10]
Mixed martial arts career
ISCF - International Sport Combat Federation
Lamas won the ISCF North Central Regional Title on April 26, 2008, in Loves Park, Illinois, US when he defeated Cal Ferry via Guillotine Choke at 4:50 of round 4.
World Extreme Cagefighting
Lamas made his WEC debut on March 1, 2009, at WEC 39 against IFL and WEC veteran Bart Palaszewski. Lamas took the fight with 4 days notice as he replaced an injured Rich Crunkilton.[11] Lamas controlled Palaszewski with superior wrestling and scored with excellent ground-and-pound to win a unanimous decision.[12]
Lamas faced Danny Castillo on August 9, 2009, at WEC 42.[13] Lamas suffered his first defeat as Castillo won the fight via second-round TKO.[14]
Lamas next faced James Krause on November 18, 2009, at WEC 44.[15] Lamas won the fight via unanimous decision.[16]
Lamas then faced Bendy Casimir on March 6, 2010, at WEC 47.[17] He won the fight in stunning fashion by defeating Casimir via flying knee KO in the first round.
Lamas defeated Dave Jansen via unanimous decision on August 18, 2010, at WEC 50.[18]
Lamas was expected to face Maciej Jewtuszko on December 16, 2010, at WEC 53,[19] but Jewtuszko had to withdraw as he suffered a broken hand during training.[20] Lamas instead faced Iuri Alcântara and lost via KO in the first round.[21]
In his UFC debut, Lamas faced returning UFC veteran Matt Grice in a featherweight bout on June 26, 2011, at UFC on Versus 4.[23] Lamas defeated Grice via TKO in the first round.[24]
Lamas faced Cub Swanson on November 12, 2011, at UFC on Fox 1.[25] Lamas won via second round submission after applying an arm-triangle choke, earning Submission of the Night honors.[26][27]
Lamas was briefly linked to a December 2012 bout with Frankie Edgar, however the pairing was scrapped after Edgar was tabbed as a replacement for the injured Erik Koch and face José Aldo at UFC 153.[32]
Lamas was expected to face Chan Sung Jung on July 6, 2013, at UFC 162.[35] However, on June 14, it was announced that Jung had been pulled from the Lamas bout and would replace an injured Anthony Pettis to face José Aldo on August 3, 2013, at UFC 163.[36] As a result, Lamas was pulled from the event.[37]
The title fight against José Aldo eventually took place on February 1, 2014, as the co-main event of UFC 169.[38] It was revealed during the UFC countdown show that Lamas received his black belt in Brazilian jiu-jitsu during his training camp leading up to the bout.[39] Lamas lost the fight via unanimous decision.
Lamas faced Dennis Bermudez on November 15, 2014, at UFC 180.[42] After dropping Bermudez with a jab, Lamas was able to secure a guillotine choke and earn the first round submission victory.[43]
Lamas next faced Max Holloway on June 4, 2016, at UFC 199.[48] He lost the back and forth fight via unanimous decision.[49]
Lamas was scheduled to face returning veteran B.J. Penn on October 15, 2016, at UFC Fight Night 97.[50] However, on October 4, Penn pulled out of the fight citing an injury.[51] In turn, the promotion announced on October 6 that they had cancelled the event entirely.[52][53]
Lamas was quickly rescheduled and returned to face Charles Oliveira on November 5, 2016, at The Ultimate Fighter Latin America 3 Finale.[54] The bout was contested at a catchweight of 155 lbs, as Oliveira missed weight by nearly 10 lbs.[55] Lamas won the fight via submission in the second round and was awarded a Performance of the Night bonus.[56][57]
Lamas was expected to face Chan Sung Jung on July 29, 2017, at UFC 214.[58] However Jung pulled out of the fight in early June citing a knee injury.[59] He was replaced by Jason Knight.[60] Lamas won the fight by first-round TKO.[61]
Lamas was scheduled to face José Aldo on December 16, 2017, at UFC on Fox: Lawler vs. dos Anjos.[62] However, Aldo was pulled from the bout in favour of a rematch with Max Holloway two weeks earlier at UFC 218, replacing an injured Frankie Edgar.[63] Lamas instead faced Josh Emmett.[64] At the weigh ins, Emmett weighed in at 148.5 pounds, 2.5 pounds over the featherweight upper limit of 146 pounds and the bout proceeded at a catchweight. Emmett forfeited 20% of his purse to Lamas.[65] Lamas lost the fight via knockout in the first round.[66]
Lamas faced Darren Elkins on November 17, 2018, at UFC Fight Night 140.[69] He won the fight via TKO in the third round.[70] Shortly after the fight, Lamas revealed in a social media post that he had been fighting with a blood clot in his left leg and that he got blood thinning medication for the condition.[71]
Lamas faced Calvin Kattar at UFC 238 on June 8, 2019.[72] He lost the fight via knockout in the first round.[73]
Lamas was scheduled to face Ryan Hall on May 2, 2020, at UFC Fight Night: Hermansson vs. Weidman.[74] However, on April 9, Dana White, the president of UFC announced that this event was postponed to a future date[75] The bout was rescheduled on August 29, 2020, at UFC Fight Night 175.[76] However, Hall pulled out of the bout due to an undisclosed injury.[77] Lamas instead faced promotional newcomer Bill Algeo.[78] He won the fight via unanimous decision.[79] This fight earned him the Fight of the Nightaward.[80] Lamas confirmed his intention to retire from professional competition after the win over Algeo.[81]