Buoyed by increased viewership and a relatively controversy-free tournament, the Indian Premier League (IPL) has seen a spike in its brand valuation to $5.3 billion after the 10th edition, according to global valuation and corporate finance advisor Duff & Phelps. The IPL's overall value as a business has increased to $5.3 billion from $4.2 billion last year, representing a three-year CAGR of 13.9%, Duff & Phelps said in a report.