In 2019, the year he turned 17, he joined T1’s main roster. In 2020 he made his debut in the Worlds regional qualifier and had 9 kills and 8 assists on Caitlyn against Afreeca Freecs.
In January 2021 he got the first pentakill of the season, and he took the starting spot from round 2 of the Summer split. That fall he reached the semifinals at his first Worlds but lost to DWG KIA, and in December he re-signed with T1.
In April 2022, in his first season as a full-time starter, he won the LCK Spring final after an 18-0 regular season. In May he lost the MSI final to China’s RNG, and in November he lost the Worlds final to DRX, finishing second at both.
The breakthrough yearIn November 2023, the year he turned 21, he beat Weibo Gaming 3-0 in the final at Gocheok Sky Dome in Seoul and won his first Worlds title. Later that year he received the Best Bottom of the Year award at the LCK Awards.
In 2024 he won Worlds for the second year in a row. It was the first time in the event’s history that a team won back-to-back titles with the same lineup. In November he re-signed with T1 again.
In November 2025, the year he turned 23, he won a third straight Worlds title and received the Finals MVP. Soon after, he moved to Hanwha Life Esports, and at the year-end LCK Awards he won Bottom Player of the Year again.
In 2026, with Hanwha Life, he won the club’s first MSI title, and in August he was named at the send-off ceremony for the Aichi-Nagoya Asian Games national team. In the LCK final in September he lost to Gen.G and finished second.
Gumayusi (born Feb 6, 2002) debuted with T1 on Sep 8, 2020, the year he turned 18, in the Worlds regional qualifier, and became known on Nov 19, 2023, the year he turned 21, when he won his first Worlds title. In 2025, the year he turned 23, he won a third straight Worlds title and the Finals MVP.
Ages are by calendar year (the year minus the birth year), birthdays aside.
T1 announced its 2020 roster on its official social media, saying the bot laner Gumayusi had joined the main roster along with Canna, Elim and Kuri.
Source 01 · Kukinews (Korean) · T1 calls up a large group of prospects · opens in a new tabT1 beat Afreeca Freecs 3-1 in round 2 of the qualifier, and Gumayusi, in his debut match, had 9 kills and 8 assists on Caitlyn.
Source 02 · Sports Today (Korean) · Faker returns, Gumayusi debuts · opens in a new tabSource 03 · Edaily (Korean) · Elim and Gumayusi click · opens in a new tabSource 22 · Daily eSports (Korean) · 2020 LCK Spring round 1 rosters · opens in a new tabGot the first pentakill of the season on Aphelios in game 1 against DWG KIA. He was then competing with Teddy for the starting spot.
Source 04 · Inven (Korean) · Gumayusi gets the first pentakill of the season · opens in a new tabAfter taking the starting spot from round 2 of the Summer split, he reached the semifinals in Reykjavik, Iceland, at his first Worlds, but lost 2-3 in the series to DWG KIA.
Source 05 · Sports Chosun (Korean) · DWG KIA beats T1 in the semifinals · opens in a new tabSource 06 · Daily eSports (Korean) · Gumayusi re-signs with T1 · opens in a new tabT1 announced the re-signing on its official social media.
Source 06 · Daily eSports (Korean) · Gumayusi re-signs with T1 · opens in a new tabBeat Gen.G 3-1 in the final at KINTEX in Goyang to follow an 18-0 regular season with a flawless title. In game 1 he got a quadrakill and a triple kill on Caitlyn. It was his first season as a full-time starter.
Source 07 · Sports Kyunghyang (Korean) · T1 wins the LCK with a perfect record · opens in a new tabSource 08 · Fomos (Korean) · Gumayusi: “I’ll go back to basics” · opens in a new tabLost the final at BEXCO in Busan to China’s RNG, 2-3 in games.
Source 09 · Yonhap News Agency (Korean) · T1 narrowly loses the MSI final · opens in a new tabLost the final to DRX in a close series that went to game 5.
Source 10 · ZDNet Korea (Korean) · 2022 Worlds final · opens in a new tabBeat Weibo Gaming 3-0 in the final at Gocheok Sky Dome in Seoul. It was T1’s first Worlds title in seven years and Gumayusi’s first.
Received the Best Bottom of the Year award and the Woori WON Bank Gold King award. He was also named to the Spring All-LCK 1st Team.
Source 12 · Game Chosun (Korean) · 2023 LCK Awards · opens in a new tabWon the final at the O2 Arena in London, England, for a second straight title. It was the first time in the event’s history that a team won back-to-back titles with the same lineup as the year before.
Source 13 · Etoday (Korean) · 2024 Worlds wrap-up · opens in a new tabT1 announced the re-signing in an official statement.
Source 14 · Xports News (Korean) · Gumayusi re-signs with T1 · opens in a new tabBeat KT Rolster 3-2 in the final in Chengdu, China, becoming the first team to win the event three years in a row. He received the Finals MVP, given to the player with the best performance in the final.
Source 15 · Newsis (Korean) · T1 wins the 2025 Worlds · opens in a new tabSource 16 · Dong-A Ilbo (Korean) · T1 wins a first-ever three-peat at Worlds · opens in a new tabHanwha Life announced the signing on its official social media. The contract is for two years.
Source 17 · Kookmin Ilbo (Korean) · Hanwha Life signs ADC Gumayusi · opens in a new tabReceived the Bottom Player of the Year award as a member of Hanwha Life.
Source 18 · Hyundai Economic Daily (Korean) · 2025 LCK Awards · opens in a new tabBeat China’s Bilibili Gaming 3-2 in the final at Daejeon Convention Center. It was an international title in his first season after the move.
Source 19 · Yonhap News Agency (Korean) · Hanwha Life wins the 2026 MSI · opens in a new tabWas named to the League of Legends team at the send-off ceremony at Cube Convention Center in Sangam-dong, Seoul.
Source 20 · OSEN (Korean) · Gumayusi goes for Asian Games gold · opens in a new tabLost the final at KSPO Dome in Seoul to Gen.G, 1-3 in games, finishing second.
Source 21 · Dailian (Korean) · Gen.G beats Hanwha Life for its seventh title · opens in a new tabEND OF SELECTED RECORDSSelected records, 2019–2026 · not a complete list of work. “Key moment” is an editorial label, not a measure of success.
What did they do, and at what age?
AgeTrail lines up the key moments of a life by age.
Debut and breakthrough are marked separately, and every record has a source.
Games · South Korea
Feb 6, 2002 —
Ages are counted from the birth year 2002: the year of the event minus 2002, birthdays aside. “Key moment” labels and the connecting story are AgeTrail's editorial reading.
Fact-checked: 2026.09.29 · An independent archive, not affiliated with the person or their agency.