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Back in the day
Back in the day Jeopardy Words Answers
For most of the 20th century tennis racquets were made of this substance
Back in the day
• Level
62
Modern nfl helmets have chin straps that identify head injuries; back in the '20s helmets were made of this material
Back in the day
• Level
2191
Modern baseballs have a core made of cork; back in the day the core was this material
Back in the day
• Level
2514
