Complex sentence: By the end of the year he was selected as the league MVP, and an all-star as an Offensive Specialist while breaking the AFL record for kickoff return yards with 1423 yards.
Split into simpler sentences: By the end of the year he was selected as the league MVP, and an all-star as an Offensive Specialist. This was all after he broke the AFL record for kickoff return yards with 1423 yards.