During his 1993 debut year with just 3 games, he spent 3 months in Perth under orders of coach Stan Alves to improve his fitness.
[2] Throughout the year, Sierakowski found himself playing both forward and defensive roles, taking a liking to the wide open spaces of Waverley Park and building a reputation along the way.
He capped off a stellar year earning State of Origin selection for WA and played against South Australia in Adelaide.
[3] He made his debut for the club in Round 1 of that year against Geelong at Kardinia Park but was struck in the back of the head by an errant swinging forearm.
Knocked unconscious mid-air from the severity of the blow, and landing awkwardly, he suffered a second knee injury, requiring a reconstruction that forced him out of the game until 2002.