 Complete the following phrase:  Burroughs started off his athletic year in Bulgaria, at the Dan Kolov  Nikola Petrov Memorial of February 28 to March 3. In this tournament, he beat Frank Chamizo once again with a convincing 92 win and also got a notable victory over Bekzod Abdurakhmonov to claim the championship. On April 1921 Burroughs competed at his first 