Complex sentence: In 2008 Lillyman was forced to leave the North Queensland Cowboys due to salary-cap pressures, and that year there ended abruptly for him when he suffered a season-ending injury in Round 15, playing against the Melbourne Storm.
Split into simpler sentences: In 2008 Lillyman was forced to leave the North Queensland Cowboys due to salary-cap pressures. His career playing for the Cowboys ended prematurely when he suffered a season-ending injury in Round 15, playing against the Melbourne Storm.