Ryswyk, a Victorian by birth, moved to Queensland as a child and represented his adopted state in the 2003 Under 18 Championship.
[2] After impressing on the wing for Southport, he was elevated from the rookie list prior to the 2005 AFL season.
[3] He made his debut in round 11, against Fremantle at Subiaco Oval and had four disposals, three of which were score assists in a convincing win for the Lions.
[4] A quad strain meant that he didn't retain his place for the next game and he made no further appearances.
He has represented the SANFL four times in matches against interstate second-tier leagues, kicking ten goals.