With the ICC looking to change the 143-year old five-day format of Test cricket to four days, iconic Sachin Tendulkar has opposed the idea and has urged the governing body to refrain from "tinkering" with the format. "Being an admirer of Test cricket, I don't think it should be tinkered with. The format has to be played in the way it has been played for so many years," Tendulkar said.