Born in Trelew, Chubut, Matthysse is an Argentine former professional boxer who competed from 2004 to 2018. He held the WBA (Regular) Welterweight title in 2018 and the WBC interim Super Lightweight title from 2012 to 2013. Matthysse was known for his aggressive pressure fighting style and formidable punching power. He is the younger brother of welterweight contender, Walter Matthysse and former featherweight world champion of boxing, Edith Soledad Matthysse. During his amateur career, Matthysse fought in the 2003 Pan American Games at Santo Domingo, Dominican Republic, where he went on to stop Colombia's Breidis Prescott in just the first round. Lucas has faced Marcos Maidana four times in the amateurs with Maidana winning three times while fighting the fourth to a draw. As a professional, Matthysse had many notable bouts including defeating the likes of; Lamont Peterson, Vivian Harris, DeMarcus Corley, John Molina, Mike Dallas Jr and Ruslan Provodnikov. His 2014 fight against John Molina was named Ring Magazine fight of the year. Matthysse lost to world champions; Manny Pacquiao, Zab Judah, Devon Alexander, Danny Garcia and Viktor Postol during his career. He retired with a record of 39-5 with 36 knockouts. The Machine at his best!