New Delhi, English statistician and one of the inventors of the Duckworth-Lewis-Stern (DLS) method, Frank Duckworth, died at the age of 84, according to a report.

According to a report on ESPNcricinfo.com, Duckworth died on June 21.

The Duckworth–Lewis method, devised by Duckworth and fellow statistician Tony Lewis, was introduced to determine results in rain-affected cricket matches.

This method was first used in international cricket in 1997 and was formally adopted by the ICC in 2001 as the standard method for setting revised targets in shortened games.

After the retirement of Duckworth and Lewis the method was renamed the Duckworth–Lewis–Stern method, with some modifications by the Australian statistician Steven Stern.

In June 2010 both Duckworth and Lewis were awarded the MBE (Member of the Order of the British Empire).

The DLS method is based on a complex statistical analysis that considers multiple factors such as remaining wickets and lost overs to set a revised target for the team batting second.