What was billed as a bruising bout between the Philippines’ police chief and a prominent Duterte heir fizzled into farce on Sunday, as the much-hyped challenger chose exile over engagement, leaving an arena and a nation watching in bemused disbelief.Sebastian “Baste” Duterte, acting mayor of Davao and youngest son of former Philippine president Rodrigo Duterte, challenged police chief Nicolas Torre to a fist-fight last week.But on Sunday, as an expectant crowd gathered at the Rizal Memorial...