Simplify the following text for a Grade 4 native English-speaking person.
Original: Sunderland play their home games at the 49,000 capacity all-seater Stadium of Light having moved from Roker Park in 1997 .
Simplified: For 99 years , Sunderland played their home games at Roker Park . In 1997 they moved , and now play their home games at the Stadium of Light .