mezii

Merriman’s journey began in the mid‑2010s when he transitioned from casual Counter‑Strike: Source play to competitive CS:GO around 2014. He rose quickly through the UK scene, reaching the Global Elite rank and establishing himself as one of the country’s most promising players. His early career included stints with teams like Dog Gaming, Team XENEX, and Orgles5/London Esports, before joining Vexed Gaming in 2019 and then GamerLegion in 2020. These formative years laid the foundation for his sharp mechanical aim and strong game sense, which soon caught the attention of larger organizations.

In early 2021, mezii signed with Cloud9 under the ambitious roster-building project led by Henry “HenryG” Greer. Despite the short-lived nature of that lineup, this move marked Merriman’s entry into top‑tier Counter‑Strike. Later that year, he joined Fnatic, becoming a key member of their international roster and even taking on in‑game leader duties for a period. During his time with Fnatic, mezii secured victories at events like REPUBLEAGUE Season 2 and Elisa Masters Espoo 2022, showcasing his ability to lead and deliver in high‑stakes matches. His individual consistency and tactical mindset turned him into one of the most reliable riflers in the European scene.

The biggest chapter of Merriman’s career began in November 2023 when he was signed by Team Vitality, one of the most decorated organizations in Counter‑Strike. With Vitality, mezii quickly achieved success at the BLAST Premier Fall Final 2023 and the BLAST Premier World Final 2023. In August 2024, he helped the team secure a historic win at IEM Cologne 2024, one of the most prestigious tournaments in the game. However, his defining moment came in June 2025 when Vitality triumphed at the BLAST.tv Austin Major 2025, making William Merriman the first British player ever to win a Counter‑Strike Major — a landmark achievement for UK esports.