Claas began playing tournament poker in 2012, and after receiving his Bachelor’s Degree in Economics, he became a full-time professional player in 2015. He has $3 million in live cashes and over $10 million in cashes online, including three SCOOP titles, a WCOOP title, and a Stadium Series title. His biggest online score to date came in August 2020, winning the $2k thrill for $172,000. Other notable wins include a SCOOP $700 event for $145,000 and a $2k FTOPS victory earning him $108,000. Claas has been traveling the live circuit on and off, with his most significant result coming from a second-place finish in the WSOPE Main Event in November 2019, for almost $800,000. He has been coaching at bitB for over five years and working with his private students. Claas has enjoyed the freedom that comes with being a professional poker player, which has thus far allowed him to live in many different countries before settling in Vienna with his wife and child.