"The board of the ICC is determined to ensure that Test match cricket is seen as the pinnacle of our great game," ICC president David Morgan said.
"We need better over-rates, better pitches that give a good balance between bat and ball and we need to consider day-night Test match cricket... the issue is the colour of the ball and the quality of the ball," he said.
"It would be a pity if day-night Test match cricket had to be played with a white ball and, therefore, coloured clothing.
"Another thought that many people have, that we are examining is whether Test match cricket can be played over four days rather than five."
"The mental shift has been made, it has been talked about and examined.
“I would be very surprised if within a year you haven't seen some significant changes in Test cricket," he said.
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