Anil Ambani, once ranked as the sixth richest person globally, faces setbacks as the Supreme Court reverses an Rs 8,000 crore arbitral award in favor of a firm in his group, Reliance Infrastructure. The award, related to a concession agreement with Delhi Metro Rail Corp in 2008, now requires nearly Rs 3,300 crore repayment by Ambani s firm. This development adds to the financial challenges faced by his group amid debt restructuring.