Lucas Chastang entered the professional Counter-Strike scene in 2016. Early in his career, he played for several lesser-known teams but struggled to achieve significant victories. In 2017, Lucas began to improve his performance and, while playing for RANKS, secured a bronze medal at ESEA Rank S - Europe: March 2017. Shortly after, competing under the nickname "Lucky," he joined beGenius ESC and claimed gold at DreamHack Tours 2017 BYOC.
Following this success, Lucas joined the team Me Myself and I but failed to achieve notable results. He then signed with Ionic before moving to dizLown, where he found greater success. With dizLown, he secured victories at Reims Esport 2017, Epsilan 15, and Orléans Game Show 3.
In the spring of 2018, Lucas decided to leave dizLown in pursuit of better opportunities. By July, he had joined 3DMAX, where he won titles at ESEA Season 28: Premier Division - Europe, ESEA Season 29: Global Challenge, and finished as a finalist at PLG Grand Slam 2018. Lucas then transitioned to G2 Esports, where he added a bronze medal at the World Electronic Sports Games 2018, a silver at ESL Pro League Season 9 - Finals, and a gold medal at Good Game League 2019 to his achievements.
From October 2019 to December 2020, Chastang competed for Team Heretics, earning multiple titles, including ESL Championnat National Spring 2020: Division 2, ESL Championnat National Summer 2020, ESL European Championship Spring 2020, and Liga de Videojuegos Profesional - La Copa 2020. In April 2021, he signed with Double Poney, where he continued his success, winning the Fantasyexpo EU Champions Fall 2021: French Qualifier, ESL Challenger at DreamHack Anaheim 2022: European Qualifier, and several silver medals in other tournaments.
Subsequently, Lucas played for HEET before returning to 3DMAX. During his time with these teams, he further enriched his collection of accolades. Notable victories included Fantasyexpo EU Champions: Spring 2022 - French Qualifier, PGL Major Antwerp 2022: European RMR - Open Qualifier #1, Intel Extreme Masters Rio 2023: European Open Qualifier #1, ESL Challenger League Season 46: Europe, and Skyesports Championship 2024: European Qualifier.
As of December 2024, Lucas Chastang remains a key player for Team 3DMAX, where he excels in the sniper role.