Complex sentence: In 2009, Cherry set the United States American junior record in the 60 m dash at the 2009 USA Boston Indoor Championships placing second (6.52) he was one hundredths of a second off the world Junior Record.
Split into simpler sentences: In 2009, Cherry set the United States American junior record in the 60 m dash at the 2009 USA Boston Indoor Championships placing second (6.52). He was one hundredths of a second off the world Junior Record.