 Complete the following phrase:  Radosław Kawęcki born 16 August 1991 is a Polish competitive swimmer who specializes in backstroke events. He currently represents the Cali Condors which is part of the International Swimming League. Kawęcki won the silver medal in the 200 m backstroke at the 2013 and 2015 World Aquatics Championships, and was twice the 200 m backstroke short course world champion. He is an 8-time European champion in the backstroke events. Kawęcki finished fourth at the 2012 Summer Olympics in London in the 