Pagunsan hopes to extend his rich vein of form by winning the $1-million event at the Amata Spring Country Club.
Since last month, he has enjoyed top-10s in Taipei and Hong Kong as well as a runner-up finish at the lucrative Singapore Open which pushed him to the Merit summit.
World No. 3 Lee Westwood and Major champs Darren Clarke and Charl Schwartzel are also vying.
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