Darren Cahill was born in Adelaide, Australia on October 2, 1965. His father, John Cahill, was a professional Australian Rules player and coach. Before turning professional, Cahill studied at the Australian Institute of Sport.
During his career, Cahill achieved greater success in doubles rather than singles. However, he reached a career-high of 22nd in the ATP singles rankings. In addition, he won two career titles at Gstaad (1988) and the 1991 Pacific Coast Championships.
His best-ever Grand Slam performance was at the 1988 US Open when he reached the semi-finals. In doubles, Cahill won 13 titles and reached a career-high of 10th in the rankings. The Australian former player also had fair success in the Grand Slam doubles events.
He made his first final at Wimbledon in 1987 in the mixed doubles event. Then in 1989, Cahill progressed to the men’s doubles final at the Australian Open. After struggling during the 1994 and 1995 seasons with a knee injury, Cahill retired at the end of the 1995 campaign.
Shortly after retirement, Cahill started coaching former Australian player Lleyton Hewitt. Under Cahill, Hewitt became the youngest-ever player to reach world number one. Following success with Hewitt, Cahill helped Andre Agassi to become the oldest-ever ATP world number one in 2003.
When Agassi retired from professional tennis in 2006, Cahill worked as a coach at the Adidas Player Development Program. Here, the former player tutored some of the modern greats such as Andy Murray, Ana Ivanovic, Fernando Verdasco, and Simona Halep.
Cahill reunited with Halep in the 2017 and 2018 seasons and he helped her to reach the number one spot in the WTA. The Australian was also Halep’s coach when she won the 2018 Roland Garros. In 2022, Cahill briefly worked as a coach for Amanda Anisimova.
Later in the season, he joined Simone Vagnozzi as a co-coach to train Jannik Sinner. At the end of the 2023 campaign, Cahill and Vagnozzi won the ATP Coach of the Year before the duo helped Sinner win his first-ever Grand Slam at the 2024 Australian Open.
