The boys' singles of the tournament 2009 BWF World Junior Championships was held on 28 October–1 November 2009. Chinese player, Tian Houwei took out the boys' singles final as he defeated Iskandar Zulkarnain Zainuddin from Malaysia in straight sets.
Die Badminton-Juniorenweltmeisterschaft 2009 fand vom 23. Oktober bis zum 1. November 2009 in Alor Setar, Malaysia, statt. Folgend die Ergebnisse im Herreneinzel. (de)
The boys' singles of the tournament 2009 BWF World Junior Championships was held on 28 October–1 November 2009. Chinese player, Tian Houwei took out the boys' singles final as he defeated Iskandar Zulkarnain Zainuddin from Malaysia in straight sets. (en)