James Duckworth (born 21 January 1992) is an Australian professional tennis player currently ranked world No. 153 by the Association of Tennis Professionals (ATP). As a junior, Duckworth enjoyed a successful career which included winning three titles and reaching the semifinals of the 2010 French Open. In January 2012, he competed in his first ATP main-draw event at the Brisbane International.
Duckworth was born in Sydney, New South Wales. He attended Sydney Church of England Grammar School, where he was on the school tennis first team from Year 7 and went on to win several AAGPS Premierships. He was offered a scholarship to the Australian Institute of Sport. where he was able to further develop his tennis. Duckworth is a keen supporter of the Newcastle Knights in the National Rugby League.
Duckworth played his first ITF under-18 tournament in December 2005 as a 13-year-old, the event was held in Perth and Duckworth lost in the first round to Sebastian Bell. Duckworth's first big result came in December 2007 when he made his first final in Manila, Philippines but had to retire in the third set against Francis Casey Alcantara. Duckworth's first title came in August 2010 at the Oceania Closed Championship held in Fiji, he beat fellow Australian Maverick Banes in the final. Out of the nine junior tournaments Duckworth entered in 2010 he managed to reach three finals that resulted in two titles won in Kuching, Malaysia and Manila, Philippines respectively. Duckworth's best junior result came at 2010 Roland Garros Junior Championships where he reached the semifinals. He reached as high as No. 7 in the combined world rankings in July 2010.