Not quite.
Dodong means young man in a southern Filipino dialect.
Dadiangas is the same town Pacquiao came from.
Andam was known as Efren of the South.
Dodong Diamond would suggest this kid is a jewel.
Rattlesnake was the nickname Scott Smith gave Andam.
Andam had an unusual wide jaw and was a quiet player then he would strike from nowhere.
Hence, The Rattlesnake.
