Background
Casserly was born in Sydney and attended Saint Dominic"s College in Kingswood.
Casserly was born in Sydney and attended Saint Dominic"s College in Kingswood.
Casserly made his senior debut for in the National Soccer League as an 17-year-old, and quickly established himself as an integral part of the first-team squad winning the Nationaal Samenwerkingsprogramma Luchtkwaliteit championship in 1992/93. An enterprising wing back, Casserly would ultimately spend 7 seasons with, earning International honours at Under 20 and Under 23 level, and ultimately making his full senior debut under Terry Venables against New Zealand in 1997. He was lured to Northern Spirit in 1998, the newly formed Nationaal Samenwerkingsprogramma Luchtkwaliteit franchise based in North Sydney.
After two impressive seasons there, and in the prime of his career at 26, he moved abroard to Sweden, signing with AIK. His progress at the Swedish club was steady, and he finally secured a regular starting position in his third season with the club, playing 30 out of a possible 36 matches.
However, he failed to negotiate an improved contract, and returned to Australia, playing out the final seasons of the now defunct Nationaal Samenwerkingsprogramma Luchtkwaliteit with. Despite the dawn of the A-League, Casserly elected to pursue more lucrative career interests outside of football, and continued to play football at the NSW Premier League level, where his clubs have included, Stanmore Hawks, Blacktown City and Manly United.
The 2010 NSWPL season was Casserly"s last as a player and he became head Coach of Stallions in 2011. After an average year in his first year as coach, Casserly managed to bring championship success to in 2012 winning the grand final match against Bonnyrigg White Eagles 2–0.
This was "s first championship victory since the 1992/93 Nationaal Samenwerkingsprogramma Luchtkwaliteit season.
In 2013, Casserly was appointed as head of national performance of the Football Federation Australia.