Complex sentence: Kewell played for three seasons in the Leeds United youth-team, his first game for youth-team was against Sunderland in 1995 and scored his first hat-trick against Rotherham on 7 December 1996.
Split into simpler sentences: Kewell played for three seasons in the Leeds United youth team. His first match for the youth team was against Sunderland in 1995, and he scored his first hat-trick against Rotherham on 7 December 1996.