Maciek Sykut (Polish pronunciation:[ˈmatɕɛkˈsɨkut]; born June 21, 1986) is an American professional tennis player. He competes mainly on the ATP Challenger Tour and ITF Futures, both in singles and doubles. He reached his highest ATP singles ranking, No. 578 on August 8, 2011, and his highest ATP doubles ranking, No. 158, on June 11, 2012.[1]