Complex sentence: Southampton is home to Southampton Football Club--nicknamed "The Saints"--the club plays in the Premier League at St Mary's Stadium, having relocated in 2001 from their 103-year-old former stadium, "The Dell".
Split into simpler sentences: Southampton is home to Southampton Football Club, nicknamed "The Saints". The club plays in the Premier League at St Mary's Stadium, having relocated in 2001 from their 103-year-old former stadium, "The Dell".