Lucas Loh was approved in Banespa's qualifying in 2008, when his career has actually started. In 2009/2010 season, his performances drew attention of many clubs and he finished according a move to Sada Cruzeiro (MG), where he stayed for a season. In the next year, Lucas changed again, this time to play for the local rivals, Vivo/Minas, where he currently plays. His title list includes the State Championship of São Paulo in 2009, the State Championship of Minas in 2010 and 2011, the Junior South America Championship in 2010, and the 2011/2012 Superliga. In 2013, the spiker was the part of the group that lifted the trophy of the Grand Champions Cup. Lucas was in the group that achieved the silver medal in 2014 and kept part of the team that represented Brazil in the FIVB World League and in the South American Games in 2015. He also was part of the national team during the 2017 FIVB World League. The following year, he was part of the Brazilian team in the FIVB World Championship silver medal campaign.