Simplify the following text for a Grade 11 native English-speaking person.
Original: The largest ever crowd for a non-competitive game at the ground was 23,284 for Bobby Robson 's testimonial match where Ipswich , including George Best , played against an England XI .
Simplified: The largest ever crowd for a non-competitive game at the ground was 23,284 for Bobby Robson 's testimonial where Ipswich , including George Best , played against an England XI .