After leading his side to an eight-wicket defeat in the second triangular series final in Adelaide, Clarke said they was not sure of the extent of the strain that affected him in the work of his century in the afternoon. They took the field in the evening as the Sri Lankans drew level.
This scenario would leave the vice-captain Shane Watson to lead Australia in the West Indies for the early part of the tour, with Clarke's arrival possibly delayed to permit him time to recuperate at home.
Clarke is due to undergo scans on his hamstring today, however Criccket understands the strain is likely to be serious to rule him out for up to weeks, putting the captain in a fight to be fit for the Check matches in the Caribbean, & definite to miss the ODIs. The first Check will start in Barbados on April 7.
Clarke's is not the only injury doubt for Australia, with the fast bowler James Pattinson also likely to miss the third final.
George Bailey & Nathan Lyon, both slated to travel to the Caribbean, have been called in as reinforcements for the third final against Sri Lanka on Thursday.