Re: Pakistan v Australia 1st ODI @ Sharjah
Power play was taken at 35.1 over to 40.0 over. At this point of time our boys were left with no option, except to take the power play.
Kindly refer the link
http://en.wikipedia.org/wiki/Powerplay_cricket
From October 1, 2011, the ICC brought changes to the bowling and batting powerplays. Under the new rules, in a 50-over match, neither powerplay may be taken before the start of the 16th over and both must be completed before the commencement of the 41st over, so overs 11 to 15 and 41 to 50 cannot be powerplay overs. Should either or both teams choose not to exercise their discretion, their powerplay overs will automatically commence at the latest available point in the innings (e.g. in a 50-over innings with one unclaimed powerplay, it will begin at the start of the 36th over).