From Liquipedia League of Legends Wiki
- March 12th - Oner, Supernova and Rebel join the team, Nyx leaves. 
- May - Allmight changes name to Roamer. 
- June 13th - Gwangjalim and Hayoon join the team. Wooje changes name to Zeus. 
- July 13th - Berserker and Phantom join the team. 
- July 31st - Clozer is promoted to T1. 
- August - Ekips joins the team. 
- August - Crescent joins the team, Gwangjalim and Rebel leave. 
- September - Phantom leaves. 
- September - Ekips leaves the team. 
- October - Fisher joins the team. 
- November 12th - Bengi joins as head coach. 
- November 26th - Roach joins from T1, Zeus is promoted. 
- November - Burdol leaves the team. 
- December - Roamer leaves the team. 
- December 1st - Oner is promoted to T1. 
- December 4th - Crescent leaves to join hyFresh Blade. 
- December 8th - T1 Academy announces their 2021 spring roster. Mowgli, Mireu and Asper join the team. 
- December 16th - Hoit joins the team. 
|Roach||Kim Kang-hui (김강희)||Top||2020-11-26 |
|Mowgli||Lee Jae-ha (이재하)||Jungle||2020-12-08 |
|Mireu||Jeong Jo-bin (정조빈)||Mid||2020-12-08 |
|Berserker||Kim Min-cheol (김민철)||Bot||2020-07-13 |
|Asper||Kim Tae-gi (김태기)||Support||2020-12-08 |
|Hoit||Ryu Ho-seong(류호성)||Support||2020-12-16 |
|Fisher||Lee Jeong-tae (이정태)||Mid||2020-10-??|
|ID||Name||Position||Join Date||Leave Date||New Team|
|Roamer||Cho Woo-jin (조우진)||Mid||2019-12-??||2020-12-??||Brion Esports Academy|
|Crescent||Yoo Hwan-joong (유환중)||Support||2020-08-??||2020-12-04||hyFresh Blade|
|Oner||Moon Hyeon-joon (문현준)||Jungle||2020-03-12 ||2020-12-01||T1|
|Burdol||Noh Tae-yoon (노태윤)||Top||2019-12-??||2020-11-??||Gen.G Esports|
|Zeus||Choi Woo-je (최우제)||Top||2019-12-??||2020-11-26 ||T1|
|Phantom||Yoon Jeong-jae (윤정재)||Support||2020-07-13 ||2020-09-??|
|Gwangjalim||Han Min-woo (한민우)||Bot||2020-06-13 ||2020-09-??||DRX Academy|
|Rebel||Park Geun-woo (박근우)||Support||2020-03-12 ||2020-09-??||KT Rolster Academy|
|Clozer||Lee Ju-hyeon (이주현)||Mid||2019-12-??||2020-07-31 ||T1|
|Supernova||Bot||2020-03-12 ||2020-06-13 |
|HaYoon||Seong Ha-yoon (성하윤)||Support||2020-06-13 ||2020-06-??|
|Nyx||Jungle||2019-12-??||2020-03-12 ||Gen.G Academy|
|Bengi||Bae Seong-woong (배성웅)||Head Coach||2020-11-12 |
|Sayho||Park Se-ho (박세호)||Coach||2019-12-??|
|2020-10-17||1st||Monthly||LCK Academy Series October 2020||2 : 0||$1,751|
|2020-09-13||1st||Monthly||LCK Academy Series September 2020||2 : 1||$1,685|
|2020-08-09||2nd||Monthly||LCK Academy Series August 2020||1 : 2||$843|
|2020-06-14||2nd||Showm.||Logitech G Rookie Invitational 2020||0 : 2||$0|
|About achievementsComplete Results in any Tournament|
|2020-08-09||05:00 UTC||Monthly||LCK Academy Series August 2020||1 : 2||DRX-R|
|2020-08-09||02:00 UTC||Monthly||LCK Academy Series August 2020||2 : 1||GD|
|2020-08-08||02:00 UTC||Monthly||LCK Academy Series August 2020||2 : 0||DRX-C|
|2020-06-14||Showm.||Logitech G Rookie Invitational 2020||0 : 2||GEN.A|
|2020-06-14||Showm.||Logitech G Rookie Invitational 2020||2 : 0||SB.A|
|Complete list of matches in any tournament|
- T1 (2020-03-12). "[T1 4 vs 5 Fan ARAM Match"] (in Korean). Twitter.
- T1 (2020-06-13). "2020 Logitech G Rookie Invitational" (in Korean). Twitter.
- T1 (2020-07-13). "12th KeG Seoul Regional Final" (in Korean). Twitter.
- LoL Esports (2020-07-31). "T1 vs KT - Round 2 Game 1 - LCK Summer Split" (in English). Youtube.
- T1 (2020-11-12). "Welcome to the T1 Family" (in English). Twitter.
- T1 (2020-11-26). "@RoachLoL moves to T1's LCK Challengers League team from 2021." (in English). Twitter.
- T1 (2020-11-26). "We're thrilled to announce that Choi "Zeus" Woo Je has been called up to join the team." (in English). Twitter.
- T1 (2020-12-01). "We're excited to announce that Ellim extended his contract and Oner is called up to finish our roster." (in English). Twitter.
- hyFresh Blade (2020-12-04). "[오피셜 Crescent 유환중 영입"] (in Korean). Facebook.
- T1 (2020-12-08). "We're thrilled to announce that Mowgli, Mireu, Berseker, and Asper joined our LCK Challengers team to finish our roster." (in English). Twitter.
- T1 (2020-12-16). "We're thrilled to announce that Ryu "Hoit" Ho-seong has joined our Challengers team to finalize our team roster." (in English). Twitter.