Original sentence: After that, Young continued to compete for a few years, but nowhere near the level of his 1992 and 1993 seasons.As of 2004, he still is the only person to have run 400 m hurdles in less than 47 seconds.He held this lead until the finish, beating Matete by 0.42 seconds.In 1992, Young won his first US National Championships title and was unbeaten prior the Barcelona Olympics, which he won with a new world record of 46.78.In the World Championships final, however, Young again made a decisive move between hurdles 7 and 8
Edited sentence: After that, Young continued to compete for another few years, but nowhere near the level of his 1992 and 1993 seasons.As of 2004, he still is the only person to run 400 m hurdles less than 47 seconds.However in the World Championships final, Young again made a decisive move between hurdles 7 and 8, and held his lead until the finish, which he reached ahead of Matete by 0.42 seconds.In 1992, Young won his first US National Championships title and was unbeaten prior the Barcelona Olympics, which he won with a new amazing world record of 46.78