Complex sentence: Stewart has played over 500 games and scored over 250 goals in his professional career and had notablespells in the Premier League for Ipswich Town and Sunderland, and was the Premier League's second highest goalscorer for the 2000--01 season.
Split into simpler sentences: Stewart has played over 500 games and scored over 250 goals in his professional career. He had spells in the Premier League for Ipswich Town and Sunderland, and was the Premier League's second highest goalscorer for the 2000--01 season.