In the 1928 Summer Olympics he finished fourth in the heavyweight competition. He was unable to competed in the bronze medal bout against Michael Michaelsen, after losing in the semifinal to Nils Ramm. Sørsdal trained as a medical student while pursuing his boxing career, boxing for Akademisk Boxe-Klub.
In 1920 he won the silver medal in the light heavyweight class after losing in the final to Eddie Eagan. Four years later he won the bronze medal in the same weight division when he won the bronze medal bout against Carlo Saraudi. As a doctor he later attained the position of head of department at Vardø hospital, and was awarded the king"s medal of merit upon his retirement.
