The ICC pitch ratings system has been under scrutiny in recent times, particularly after the Melbourne Ashes pitch was rated 'unsatisfactory' by the ICC. The pitch ratings system, which assesses the quality of cricket pitches used in international matches, has been in place since 2003. The system assigns a rating to each pitch based on its surface, slope, and other factors that can affect the game. The ratings range from 1 (poor) to 6 (excellent), with 6 being the highest rating. The pitch ratings system is crucial in ensuring that cricket matches are played on pitches that meet the required standards. The system takes into account various factors, including the surface, slope, and overall condition of the pitch. The ICC has a team of experts who assess the pitches before and during each match, and they use a standardized scoring system to rate the pitches. The ratings are then used to determine whether the pitch is suitable for the game.