ALBAWABA - Yasir Al-Rumayyan, Governor of Saudi Arabia's Public Investment Fund (PIF), was previously seen playing golf with President-elect Donald Trump. He was spotted again this Saturday at the UFC fight sitting next to Trump and referred to as ‘the mystery man.’ What you need to know about Yasir Al-Rumayyan Yasir Al-Rumayyan, is a Saudi businessman and governor of the Public Investment Fund, the sovereign wealth fund of the Kingdom ...