Song "Smeb" Kyung-ho joined Incredible Miracle 1 in March of 2013 as the new starting top laner. He made his competitive debut at the IEM Season VII - World Championship where his team fell in the group stage. He came back to Korea to participate in his first OGN at OLYMPUS Champions Spring 2013 where IM failed to make it past the group stage. They then played in HOT6iX Champions Summer 2013 where they didn't make it past the group stage again. Smeb was benched shortly after the tournament ended.
Smeb was given back the starting top lane position before the start of HOT6iX Champions Spring 2014. Once more, IM failed to make it out of groups. Next, they attended HOT6iX Champions Summer 2014 where they couldn't make it out of groups for the final time. Smeb left the team a few months later in September.
On November 14th, 2014, Smeb joined the newly formed HUYA Tigers together with Lee, kurO, PraY, and GorillA. The team played in the Champions Spring 2015 Qualifiers along with Incredible Miracle, Prime Clan, and Xenics, where they finished 2-1 and qualified for Champions Spring 2015. The team then renamed to GE Tigers. GE started out unarguably the top team in Korea at SBENU Champions Spring 2015 and earned themselves an invitation to the IEM Season IX World Championship in March. However, after defeating Cloud9 and SK Gaming to win their group, they lost 2-1 to Team WE in the semifinals. This defeat was considered by many casters and analysts to be the biggest upset to date in the entire history of League of Legends competition. They qualified for the finals of the OGN playoffs because of their first place finish in the regular season. Unfortunately, they lost 3-0 to SK Telecom T1 in the finals and placed second. The team renamed to the KOO Tigers prior to the start of SBENU Champions Summer 2015. KOO placed fourth in the regular season and qualified for the playoffs but lost 3-2 in the semifinals to KT Rolster. Because SKT won the finals, KOO still qualified for the 2015 Season World Championship as the second seed due to circuit points. KOO was placed into a group at worlds with Counter Logic Gaming, Flash Wolves, and paiN Gaming. They placed second, ending with a 4-2 record. They beat KT Rolster 3-1 and Fnatic 3-0 to make it to the finals against SKT. However, they finally fell in the finals with a 3-1 loss.
Soon after Worlds, Koo dropped the team as a sponsor and they renamed to the Tigers. The Tigers played in the 2015 LoL KeSPA Cup but they were upset in the first round 2-0 by SBENU Sonicboom. The Tigers renamed to ROX Tigers in January.
During Champions Spring 2016, the ROX Tigers placed first in the regular season with a 16-2 record. Smeb won the regular season MVP award with 1400 points total. Their regular season placing earned them a bye into the finals of the Spring Playoffs, where they faced SK Telecom T1. While the Tigers were considered to be the favorites in this set, they unfortunately lost 3-1, earning second place for the split.
During the 2016 LCK Summer Split, the Tigers once again placed first in the regular season with an impressive 15-3 scoreline in Bo3s, with two losses to SK Telecom T1 and one loss to Samsung Galaxy. This seeded them in the 2016 LCK Summer Playoffs directly into their third domestic finals, where they eventually met KT Rolster. In an epic series, the ROX Tigers won the set 3-2, claiming 1st place in the Summer Split and giving them Korea's first seed into the 2016 Season World Championship.
At the 2016 Season World Championship, the ROX Tigers were placed into Group A, along with G2 Esports, Counter Logic Gaming, and Albus NoX Luna.