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 "Mactabene Amachree"): Mactabene Amachree (born 30 January 1978 in Port Harcourt) is a former Nigerian professional basketball player.
Relevant evidence: No