Clarke is doubtful to feature in Australia’s series opener against Zimbabwe on Monday (25th August).
According to a report on the official Cricket Australia website, Clarke experienced some pain in his left hamstring during training. He was immediately sent back to the dressing room and did not participate in the remaining practice session.
"We will monitor his condition closely over the next 24 hours to see how he responds to further treatment before making a decision on his management," team physiotherapist David Beakley said in Harare.
Vice-captain George Bailey will be leading the Australian side if Clarke is sidelined due to the injury.
Phillip Hughes, who was drafted into the tournament squad as a replacement for the injured Shane Watson, will replace Michael Clarke for the first match of the series against Zimbabwe.
© Cricket World 2014