[1] He has won nine titles at club level playing for teams in Sweden, Denmark and Germany.

Claar made his international debut on the Swedish national team in June 2017 in a match against Poland.

Claar began playing handball in his hometown club Norrköping HK.

[4] In his first season at the club, he reached the Champions League final, where Aalborg lost to FC Barcelona 23-36.

[7] For the 23/24 season he joined German Bundesliga side SC Magdeburg on a three year contract.