|Date of birth||20 July 1974|
|Place of birth||Perth, Australia|
|Height||1.86 m (6 ft 1 in)|
|1999||Marine Castle United||26||(1)|
|* Senior club appearances and goals counted for the domestic league only.
Ithier was a cult figure amongst Perth Glory supporters for his flamboyant, aggressive play and changing hairstyles. In 1998, he had a 3-week trial with English Premier Division Champions Blackburn Rovers F.C. This side managed by Roy Hodgson included such players as Chris Sutton, Damien Duff, Colin Hendry and Martin Dahlin. But Ithier was refused the relevant work permit to sign in the UK. Without the European heritage to play in Europe Ithier returned and focussed on plying his trade in Asia.
Ithier started his Asian career with 1997 Malaysian Super League champions Sarawak FA under the guidance of Alan Vest. His debut game at a sold out Sarawak Stadium was in 1998 Malaysia Charity Shield against Selangor FA in which Sarawak FA won 3-1 with 9 players. Playing in the sweeper role Ithier flourished and quickly became a crowd favorite. Alan Vest once described Ithier as the "Best Header" of the ball in all Malaysia. Ithier's form in Malaysia earned him the trial with Blackburn Rovers F.C..
After returning from the UK, Ithier signed with S-League team Marine Castle United for the 1999 season. Ithier will be remembered in Singapore for his Blonde hair and colourful designed Adidas boots. He was selected as one of the best Foreign players and played in the S-League All Stars game. He was again a crowd favorite and constantly surrounded by fans after the game even when the team performed badly, giving autograph's. Ithier was involved in a life-threatening incident whilst playing against Tanjong Pagar United Football Club. He rose to header a ball from a corner and collided with a player being knocked unconscious. The home side Tanjong Pagar FC did not have an ambulance present, and Ithier was saved by the Marine Castles physio. Tanjong Pagar United Football Club embroiled in controversy was fined by the S-League and the decision resulted in the safety procedures at all clubs to be re-written. Ithier played the following week against doctors advice and was named Man-of-The Match!
Dubbed the "Adopted Greek" during his 9 years on and off with Floreat Athena Ithier was renowned for spectacular long range goals (including one from the halfway line in the 2001 Night Series Final), specialty freekicks, and bone crunching tackles. He won Floreat Athena Fairest and Best player in 1996, and figured heavily in Athena's team of 1997's, regarded as one of Athena's best years, winning the Premier League, Cup and Night Series trophies under coach and former Greek legend Jim Pyrgolis.
Doug now has retired from playing and is the Licensee and Director of Vital Property Group pty ltd  in Perth, Western Australia. He is married to Debbi and has one son named Jaiden. He is an avid golfer playing off a handicap of 3 and cycles every day to keep fit.