Question:  Austin Abayomi Koledoye, is a Nigerian professional basketball coach, he's coached Cambodia's national basketball team, which he led to its best performance ever at which 2015 event that occured in Kallang, Singapore?
Sentence (from "Austin Koledoye"): Since 2009, he has coached Cambodia's national basketball team, which he led to its best performance ever at the 2015 Southeast Asian Games.
Relevant evidence: Yes