Complex sentence: Choo began his playing career as right full-back for Singapore Chinese F.A. 's third team in the Third Division in 1933; the club won all of their league games that season to win the title.
Split into simpler sentences: Choo began his playing career for Singapore Chinese F.A. 's third team in the Third Division in 1933. The club won all of their league games that season to win the title.