17 Sep 1999
Boonsai Sangsurat beats Manny Pacquiao via knockout 3/12
Flyweight (112 lb)
Boonsai Sangsurat becomes the WBC Flyweight world champion
25 Feb 2000
Boonsai Sangsurat beats Masaki Kawabata via unanimous decision 12/12
19 May 2000
Malcolm Tunacao beats Boonsai Sangsurat via knockout 7/12