Thanasi Kokkinakis undergoes surgery to resolve a chronic pectoral injury, following recent struggles at the Australian Open and Adelaide International.

Australian Thanasi Kokkinakis said he has undergone surgery in a bid to resolve a lingering pectoral injury.

Thanasi Kokkinakis has undergone surgery to try to correct the "mental and physical torture" he was suffering through a long-standing pectoral injury.

The tennis star was hampered by the issue during this year's Australian Open, where he bowed out of the men's singles draw in the second round. Kokkinakis still travelled to Stockholm in early February for Australia's Davis Cup tie with Sweden but did not play a match.