Professor Steven Stern is a professor in the Department of Statistics, Queensland University of Technology, Brisbane. He is the current custodian of Duckworth–Lewis method (D/L method), the mathematical formulation designed to calculate the target score for the team batting second in a limited overs cricket match interrupted by weather or other circumstances. The D/L method was devised by two English statisticians, Frank Duckworth and Tony Lewis.
From November 2014, after the retirement of Frank Duckworth and Tony Lewis, Steven Stern has been taking care of maintenance and upgrades in this methodology. Duckworth–Lewis method has been renamed to Duckworth-Lewis-Stern method (or D/L/S method).
Steven Stern Wikipedia