Jonathan Trott looks for further refinements in `controversial` DRS

Sydney: England batsman Jonathan Trott has called for more clarity in the rules that are involved in the use of the controversial Decision Review System (DRS), which has been a hot debate in the current Ashes series.

According to a report, during the ongoing Ashes series, in which England has achieved a winning 3-0 lead over Australia heading into next week`s final Test at The Oval in south London, DRS has been a repeated source of controversy, with Trott himself just one player on the wrong end of a questionable decision.

Trott said that the rules needed to be strengthened so that the players and spectators do not have a problem.

However, the right-hander said that he thought DRS had been good even though there were a few grey areas that were shown.