Simplify the following text for a Grade 7 native English-speaking person.
Original: Ditka was the only individual to participate in both of the last two Chicago Bears ' championships , as a player in 1963 and as head coach in 1985 .
Simplified: Ditka was the only person to take part in the last two Chicago Bears ' championships , as a player in 1963 and as head coach in 1985 .