Complex sentence: As a Junior in high school at Shawnee Mission West High School in Overland Park, Kansas he was injured during his junior year at football practice 2/3rds through the season and required to wear a knee brace for 10 weeks.
Split into simpler sentences: As a Junior in high school at Shawnee Mission West High School in Overland Park, Kansas he was injured during his junior year at football practice. The season was 2/3rds and he was required to wear a knee brace for 10 weeks.