On September 4, 2002, Clarkson won the first season of "American Idol", beating Justin Guarini by a margin of 58% to 42%. After the results were announced, Clarkson performed the song "A Moment Like This", which was written for the winner of "American Idol" and would be released on her first CD "Thankful". When it was released as a single in October 2002, it set a record on the U.S. "Billboard" Hot 100 chart when it rose from number 52 to number one. "Thankful" sold 236,000 copies in its first week in the U.S.