Before Sziller arrived at St Kilda he had had a brief but successful career in the SANFL with Woodville-West Torrens.
In 1993 he played in their inaugural premiership team and won the Jack Oatey Medal for 'Best on Ground'.
The following season he was the club's Best and fairest winner and attracted the attention of St Kilda who recruited him as the 25th pick in the 1994 National Draft.
After being de-listed at the end of 2000 he was picked up by Richmond who were coached by his former teammate Danny Frawley.
He spent two seasons with Richmond, including playing in the 2001 Preliminary Final.