Lleyton Hewitt beat Pete Sampras to capture his maiden Grand Slam singles title at the US Open in 2001.

Lleyton Hewitt beats Marcos Baghdatis in five sets at the Australian Open in 2008.

Lleyton Hewitt finished as year-end World No. 1 in the FedEx ATP Rankings in 2001 and 2002.

Lleyton Hewitt did not drop a set en route to the Libema Open title on his tournament debut in 2001.

Jordan Thompson and Australian Captain Lleyton Hewitt celebrate one of their country's two singles wins on Friday against Brazil.

Lleyton Hewitt falls in doubles with Jordan Thompson at his home Adelaide International.

Former World No. 1 Lleyton Hewitt presents his former coach, Tony Roche, with the first Tim Gullikson Career Coach Award.

Team Australia cheers for Alex de Minaur at Ken Rosewall Arena on Thursday.

Alex de Minaur bounced back from a three-set loss in singles to partner Nick Kyrgios to a doubles win that clinched Australia's tie victory against Great Britain.

Alex de Minaur, captain Lleyton Hewitt and Nick Kyrgios look to please the home crowd at the ATP Cup in Brisbane.

Patrick Rafter, John Newcombe, Ken Rosewall and Lleyton Hewitt pose for a photograph by Sydney Harbour Bridge ahead of the ATP Cup draw.

Lleyton Hewitt and John Newcombe captured a combined 65 tour-level singles titles and both reached No. 1 in the ATP Rankings.

Alex de Minaur and Lleyton Hewitt fall to Ben McLachlan and Jan-Lennard Struff in straight sets at the Brisbane International on Monday.

Australia's John Peers and Lleyton Hewitt defeat Oliver Marach and Jurgen Melzer of Austria in the Davis Cup World Group Play-offs on Saturday.

Alex Bolt and Lleyton Hewitt trail Raven Klaasen and Michael Venus by two sets to one in the first round at Wimbledon.

Nick Kyrgios and Lleyton Hewitt talk tactics on Wednesday during their victory over 2015-16 champions Pierre-Hugues Herbert and Nicolas Mahut at The Queen's Club.

Aussies Lleyton Hewitt and #NextGenATP Alex de Minaur are broken three times in a loss against Brits Kyle Edmund and Cameron Norrie in Estoril.

Lleyton Hewitt and Alex de Minaur defeat second seeds Raven Klaasen and Michael Venus in straight sets to reach the Millennium Estoril Open quarter-finals.

Lleyton Hewitt and Sam Groth march into the third round at the Australian Open.

John Peers and Jordan Thompson give captain Lleyton Hewitt reason to celebrate as Australia take a 2-1 lead on Belgium.

Nick Kyrgios, below, and captain Lleyton Hewitt guide Australia into a second Davis Cup semi-final in three years.

Former World No. 1 Lleyton Hewitt hung up his racquet in 2016.

Lleyton Hewitt's fiery attitude helped him raise his game against Top 10 players throughout his career, but especially in 2001.

Lleyton Hewitt comes out of retirement to score an epic doubles win.

Lleyton Hewitt vuelve de su retiro al lugar donde fue campeón en 2002