What is Decision Review System (DRS) in Cricket?

Question

Australian captain Steven Smith was recently embroiled in controversy after looking towards the dressing room while deciding whether to call for review of his LBW decision.

Why do the rules forbid the batsman consulting with his team on the sideline? What is the problem that this rule is trying to avoid?

Answer 1

The Umpire Decision Review System (abbreviated as UDRS or DRS) is a technology-based system used in the sport of cricket. The system was first introduced in Test cricket, for the sole purpose of reviewing controversial decisions made by the on-field umpires as to whether or not a batsman had been dismissed.