Yuri "KEITHMCBRIEF" Jew is from San Leandro, California, in the United States. He played Defense of the Ancients, Heroes of Newerth, and Starcraft II prior to starting League of Legends. KEITHMCBRIEF's first team was Team Gyrations, where he played with NintendudeX, Bee Sin, Yusui, and Adrian until its disbanding in July 2014.
He joined Team LoLPro in November 2014, to play in the Expansion Tournament. LoLPro qualified for the tournament via the Challenger ladder under the name Thomas and the Slotkins. They defeated Fission in the first round but then lost to Team Coast in round 2 and were eliminated from the tournament. Though his primary role is AD carry, KEITHMCBRIEF played support with LoLPro.
KEITHMCBRIEF joined Liquid Academy as part of their initial starting roster in January 2015, moving back to AD carry from support. He was joined by zig, beibei, Ennui, and JoJo. In the first week of the Spring 2015 NA LCS season, starting AD carry Piglet had not yet entered the country, and so Keith substituted for him. After Piglet arrived, Keith and Piglet switched in and out for the next several weeks, until Piglet finally became the starting AD carry full time. Keith played with Team Liquid Academy in the NACS Summer Qualifier, but they were eliminated in the second round to tournament-favorites Misfits.
Four weeks into the Summer Season, Keith began a tryout with Team SoloMid for their AD carry position. After the fifth week, his contract was transferred from Team Liquid to TSM. He played in one game in week 6, but the team returned to WildTurtle as their starting AD carry for the rest of the season.