Youth and amateur Williams started his career in the youth ranks of Jamaica's
Santos FC. He also went on to play for the youth teams of
Arnett Gardens FC and
Harbour View FC.
Professional Williams played at the professional level for
Santos FC and
Harbour View FC in the top flight
Jamaica National Premier League. Williams was a key contributor for Harbour View helping the club capture the league title in 2010. After impressing with
Harbour View FC Williams went on trial with Norwegian Division One side
Mjøndalen IF during the 2010 season. In early March 2011 Williams continued to explore overseas options going on trial with
Major League Soccer side
Toronto FC. He impressed coach
Aron Winter and was signed by
Toronto FC on 31 March 2011. Two days later Williams made his debut for Toronto as a second half sub for
Nana Attakora in a 1–1 home draw against
Chivas USA. On 19 July 2011 Aron Winter confirmed that Williams would miss the remainder of the 2011 season. On 20 June 2012 Williams made his return from injury as a second half sub for
Danny Koevermans in a 3–3 away draw to
Houston Dynamo. Williams was released by Toronto on 15 November 2012. Dicoy returned to Harbour View in 2013.
International Dicoy Williams made his international debut for
Jamaica on 12 August 2009 in a scoreless draw against
Ecuador played at
Giants Stadium. Williams was called up to his first international tournament for the
2011 CONCACAF Gold Cup. He started the first game for Jamaica which ended in a 4–0 victory over
Grenada, however in the second game of the group stage against
Guatemala Williams hurt his knee forcing
Theodore Whitmore to make a 10th minute substitution.
International goals :''Scores and results list Jamaica's goal tally first.'' == Coaching career ==