On 21st of November, 2019, T1 announced that Mun “Cuzz” U-chan has signed a multi-year contract with the team, and Lee “Effort” Sang-ho has also renewed a multi-year deal.
Cuzz was one of the top junglers in the LCK in season 2019, competing against other top junglers in the league such as Lee “Tarzan” Seung-yong and Kim “OnFleek” Jang-gyeom. He finished first place in the Korean solo queue at the end of the season 2019.