Lucas Rossander began his professional esports career in CS 1.6 in 2010. He transitioned to CS in 2012, playing for a number of teams over the years. Until 2016, he represented teams such as Copenhagen Wolves, Anexis eSports, unu.AiN, Western Wolves, 3DMAX, No Problem!, Team X, and Heroic. However, gla1ve did not achieve significant success during this time.
In the fall of 2016, Lucas joined Astralis, where he finally tasted the long-awaited victories. He secured gold medals at prestigious tournaments including the Atlanta 2017, ELEAGUE CS
Premier 2018, FACEIT Major: London 2018, Intel Extreme Masters XIII - Katowice Major 2019, StarLadder Berlin Major 2019, ESL One: Road to Rio - Europe, ESL Pro League Season 12: Europe, DreamHack Masters Winter 2020: Europe, BLAST Premier Circuit 2020, Intel Extreme Masters XV - Global Challenge, CCT Season 1 North Europe Series #3, Intel Extreme Masters Dallas 2023: European Qualifier, and CCT Season 1 South Europe Series #4. He also earned multiple silver and bronze medals in various online and offline tournaments.
In December 2023, Lucas became a member of the ENCE team, for which he still competes. Notable achievements with ENCE include a 3rd-4th place finish at the ESL Challenger at DreamHack Summer 2024 and a victory at the Elisa Masters Espoo 2024.
Rossander also boasts notable personal achievements. In 2018, he was ranked among the top players in the world by the portal HLTV.org, securing the 8th position. Additionally, in 2019, he earned the MVP award at the StarLadder Berlin Major 2019 tournament.