Complex sentence: Simpson made his Crystal Palace debut in the fifth game of the 1929-30 season against Norwich City and scored a hat-trick, and by March of that season, had scored 27 goals in 27 league and cup games.
Split into simpler sentences: Simpson made his Crystal Palace debut in the fifth game of the 1929-30 season against Norwich City and scored a hat-trick. By March of that season, Simpson had scored 27 goals in 27 league and cup games.