Retiring Australian great Lleyton Hewitt has been honoured at the ATP World Tour Finals in London.

Hewitt was presented with a framed poster listing his career achievements in front of a 17,800 strong crowd at the London O2 arena.

Former world No. 1s Boris Becker, John McEnroe Mats Wilander and Rafael Nadal were also present.

โ€œI feel old. I've just being watching Andy [Murray] and Rafa [Nadal] and I was thinking that the game has evolved so much over the years,โ€ Hewitt said.

โ€œIt was many years ago that I won this season-ending tournament and when I held the No.1 trophy.

โ€œThe Tour has been a big part of my life and I've loved every minute of it. Thank you to everyone for supporting me.โ€

Hewitt won the season ending ATP World Tour Finals on two occasions.