The first Test series after the ICC Champions Trophy is West Indies' tour to Australia for three Tests, followed by Sri Lanka's tour to India, England's tour to South Africa for four Tests and a three-Test tour by Pakistan's to Australia.
This gives both India and Sri Lanka the first shot at the number-one spot as the first Test between South Africa and England starts after the conclusion of the Test series in India which, according to the Future Tours Programme, is likely to start in November. While Sri Lanka will need to win the series to go top of the table vs INDIA, India will have to win 2-0 to topple South Africa.