Kolkata Knight Riders were found wanting on more than one front, but head coach Brendon McCullum singled out their struggles in the powerplay, as the team's disappointing IPL campaign neared its end. Former champions KKR suffered their seventh defeat on Saturday night, a 75-run drubbing by Lucknow Super Giants here. "We struggled in the power play which has been a frustration for us throughout the season," McCullum said, adding that the team needs to find a way to be more aggressive without losing wickets in the first six overs. The Shreyas Iyer-led side now finds itself on the brink of elimination. "We've been good throughout the middle phase and not too bad at the death," McCullum said at the post-match press conference.