Australia captain Aaron Finch says he is uncertain about playing in Friday’s crunch T20 World Cup Super 12 match against Afghanistan after suffering a hamstring strain on Tuesday.

The hosts and defending champions would need to win the Group 1 clash at Adelaide Oval to stay in the tournament and Finch said he won’t risk playing if he had any doubts about his fitness.

“Very hopeful to (play), yeah. I’ll have a good hit out this afternoon and give it a solid test out,” Finch told reporters before training on Thursday.

Tim David also sustained a hamstring issue in the win over Ireland on Tuesday and Finch said the middle-order batsman was in the same position as himself.

With one more Super 12 match to play, Australia are tied on five points with New Zealand and England at the top of Group 1 but have a far inferior net run-rate.

Only two teams progress from the group to the semi-finals so Australia need to beat the Afghans and give their net run-rate a healthy boost or be reliant on New Zealand or England suffering upsets to get them through.

The Black Caps have the best net run-rate and captain Kane Williamson said they will focus purely on performance when they take on the Irish looking for a win to take them into the last four.