CoreJJ Domestic Career


Jo “CoreJJ” Yong-in began his LoL career as an AD carry for Biglife Miracle. Together with his teammates, he played in 2014 HOT6iX Champions Summer. Unfortunately, Biglife Miracle had an abysmal showing in the group stage and failed to stand up to advance to the playoffs.

After such a disappointing showing, CoreJJ left the organization. He had a brief stint on Quvic E-Sports before joining Team Dignitas in the NA LCS. Despite his best efforts, Dignitas had a very shaky showing in the 2015 Spring Split. After securing a 6-12 record, they finished the regular season in ninth place and were forced to play in the Promotion Tournament. There, they clashed with Team Fusion. The series came down to the wire, and Dignitas barely squeezed out a 3-2 victory to retain their NA LCS slot.

Still, they bounced back in the 2015 Summer Split. With a 10-8 record, Dignitas clinched the sixth playoffs spot and advanced to the knockout stage. However, their run was incredibly brief as they suffered a crushing 0-3 defeat in their first series against Team Impulse.


In the off-season, CoreJJ went back to Korea to play for Samsung Galaxy (SSG). In the 2016 LCK Spring Split, he shared playtime with his fellow AD carry, Stitch. Samsung produced a decent 10-8 record and looked set to claim their playoffs spot, but suddenly, they were challenged by the resurging Afreeca Freecs lineup. After losing the tiebreaker, Samsung were eliminated from the competition.

When Samsung Galaxy recruited a promising AD carry in Ruler, CoreJJ switched to the support position. This duo proved to be dominant in the 2016 LCS Summer Split. With its help, Samsung produced a 12-6 regular season record and qualified for the playoffs in fourth place. Their first win against Afreeca Freecs showed a lot of promise, but the following 0-3 loss to KT Rolster knocked them out of the competition.

But Samsung had a second shot in the Gauntlet. In the first match, they scored another confident victory against Afreeca Freecs. But the finals had them clashing with the same team that defeated them in the playoffs, KT Rolster. The series went the full distance, but in the end, Samsung clinched the W and qualified for the 2016 World Championship.

Afterward, they took on the 2016 KeSPA Cup. SSG made it out of the group stage with a 2-0 victory over Rising Star Gaming. In the Quarterfinals, they suffered a narrow loss at the hand of ESC Ever.


Samsung had a strong showing in the 2017 LCK Spring Split. In the regular season, they breezed to the second-place finish, outclassing the likes of Afreeca Freecs and KT Rolster in the process. With that, SSG were seeded directly into the Semifinals, which meant they were in a great spot to win their first LCK split. But a devastating 0-3 loss to KT put an end to these ambitions.

It seemed like a similar narrative would unfold in summer. Despite their best efforts, Samsung couldn’t break into the top-2 in the regular season, and their playoffs run wrapped up with a crushing defeat against SKT T1. But once again, Samsung got a second wind in the Regional Finals. There, they scored back-to-back victories against their old rivals—Afreeca Freecs and KT Rolster—to punch their Worlds ticket.


In the off-season, the entire Samsung Galaxy lineup was acquired by KSV eSports.

CoreJJ International Tournaments


On Team Dignitas, CoreJJ attended his first international tournament, IEM Season 9 Cologne. Dignitas had a strong start with a 2-1 victory over Ace High Esports Club, but the following 0-2 loss to Gambit Gaming knocked them out of the competition.


On Samsung Galaxy, he went to the 2016 World Championship. SSG dominated the group stage and entered the playoffs with a 5-1 record. There, they dismantled Cloud9 and H2K and qualified for the finals where they faced a fellow LCK team, SKT T1. After a furious exchange of blows, Samsung lost a close 5-game series and walked away with the silver medal.

Afterward, SSG went to IEM Season 11 Gyeonggi. They took over their group, crushing Vega Squadron and Immortals to advance to the bracket stage. Samsung then 2-0’d Team Liquid and clashed with another Korean team—Kongdoo Monster—in the finals. But Kongdoo couldn’t put a stop to their momentum, and after scoring a dominant 3-1 victory, Samsung secured their first international trophy.


Samsung also qualified for the 2017 World Championship. In the group stage, they were the only Korean team that failed to secure a first-place finish, losing to the Chinese RNG. But Samsung made up for it in the Quarterfinals by crushing the tournament favorites—Longzhu Gaming—with a 3-0 score. At the time, the meta revolved around the bot lane, CoreJJ was crucial to Samsung’s victory.

In the Semifinals, Samsung won 3-1 over Team WE and prepared to take on the most accomplished team in the world, SKT. Many predicted Samsung’s failure. But past achievements meant little in face of SSG’s resurgence, and they dismantled SKT T1 in a dominant 3-0 victory. With that, they claimed the World Championship trophy.