He made his début against the South American Jaguars on 26 April 1980 at the Wanderers Stadium in Johannesburg.
As a player, he may be best known for scoring 3 tries against the All Blacks in the famous "flour bomb" Test at Eden Park in Auckland, New Zealand on 12 September 1981.
[2] Mordt joined English rugby league club Wigan, making his début for them on the wing on 5 January 1986 against Swinton.
He played on the wing in Wigan's 11-8 victory over Hull Kingston Rovers in the 1985–86 John Player Special Trophy Final at Elland Road, Leeds on Saturday 11 January 1986, and was also part of the Championship-winning team during the 1986–87 season.
[8] He was also a crucial cog in the 1995 Rugby World Cup-winning coaching set-up of Kitch Christie.