[13] In 2014, SK Telecom T1 K followed their success through in the OGN winter season, winning the tournament without dropping a single game.

They were heavily favored coming into the tournament, but were initially unable to perform up to their usual standards, unexpectedly losing several games in the group stage.

[19] However, they managed to turn things around during the elimination round and eventually clinched the title by sweeping the North American team, Counter Logic Gaming, in the finals.

SKT then swept Flash Wolves 3–0 in the semifinals and defeated G2 Esports 3–1 in the finals, becoming the first team to win the Mid-Season Invitational back-to-back.

[26] At the 2017 World Championship, SKT were considered to be strong favourites to lift the cup for a third consecutive time despite not winning the LCK Summer Split.

After a 5–1 group stage, SKT narrowly defeated Misfits and Royal Never Give Up in the quarterfinals and semifinals, respectively, before facing Samsung Galaxy in a repeat of the previous year's final.

[31] SKT qualified as the LCK's first seed for the 2019 League of Legends World Championship, where they were once again defeated by G2 Esports in a semifinals series, losing 3–1.

[38] At the 2021 League of Legends World Championship, T1 was eliminated in the semifinals by DWG KIA, losing 3–2 in a best-of-five series.

[45][46] The team won every series to advance to the finals, qualifying for the 2023 Mid-Season Invitational after defeating Gen.G in the upper bracket semifinals.

[47] T1 lost the Spring Split title against the same opponent in a rematch of the 2022 LCK Summer 2022 finals, as Gen.G won the match 3–1.

[53] Kim "kkOma" Jeong-gyun Im "Tom" Jae-hyeonCho "Mata" Se-hyeong Roster updated 22 November 2024.

The StarCraft division of SKT was originally founded in 2002 by player Lim "BoxeR" Yo-hwan under the name Team Orion, which was later renamed to 4 Union in December 2003.

[6] Yoon "Autumn" Eu-teum Lee "CheongGak" Il-hoSeol "Indigo" Do-hoon Latest roster transaction: 18 January 2025.