Quas started out on the team New World Eclipse, where he played in the top lane from May 2013 to September 2013. On September 14th, Quas joined the reformed ggLA, taking the position of top laner with KOR Kez as jungle, Bischu in the mid lane, otter as AD Carry, and NydusHerMain as support. He played with them up until October 14th when he left to take the position of solo laner for Team Curse, to play in the top lane while occasionally switching with Voyboy to play mid.
Prior to the start of the spring LCS split, Team Curse merged with the Team Liquid organization and rebranded under the name Team Liquid. After a few swaps between Keith and Piglet as their AD carry, the team ended the season with a 9-9 record and qualified for playoffs with the sixth seed after defeating Team 8 in a tiebreaker game. During the split, Quas showcased his deep champion pool, with 13 different picks and wins on 9 of them. In the playoffs, Liquid beat CLG 3-0 in the quarterfinals before falling to Cloud9 3-2 in the semifinals; in the third-place match, Liquid finally broke the "fourth-place curse" that stopped them from placing higher than fourth place in any event that had persisted since they were Team Curse and took down Team Impulse 3-2.
Team Liquid finished the summer split round robin in first place after winning a tiebreaker match over Counter Logic Gaming - the first team other than TSM or Cloud9 to place first in an NA LCS round robin. However, in the playoffs, they lost immediately in the semifinals to TSM, making them also the first team to finish first in an NA LCS round robin but not make the playoff finals. A CLG victory over TSM in the playoff finals sent Team Liquid to the regional finals instead of giving them a direct seed to Worlds via Championship Points, and in the gauntlet they lost to underdogs Cloud9, ending their post-season abruptly.
On November 29th, 2015 Quas was suspended from Team Liquid in a decision made by team management. Shortly afterwards he announced his retirement from competitive League of Legends.
In April 2016, Quas came out of retirement for the spring split to join NRG eSports, as part of a rebuilt roster including himself, KiWiKiD, Santorin, and Ohq along with GBM from the team's spring run. The roster proved unsuccessful, and NRG were consistently in eighth place week after week in the summer split until they fell to ninth in week 9. In the promotion tournament, they lost first to Cloud9 Challenger and then to Echo Fox in back-to-back 3-0 sweeps and were relegated to the NACS. Quas left the team shortly afterwards.