David Warner finally came good with the bat but it was the bowlers who had to help Australia hold off a late Pakistan challenge in their ICC World Cup match at the County Ground in Taunton on Wednesday.
Cummins bagged three wickets for 33 runs while Mitchell Starc got two for 43 as the Aussies held off a late Pakistan flurry to win by 41 runs.
Starc returned for a late spell to remove Wahab Riaz, whose 39-ball ball 45 had given Pakistan hope of overhauling the Aussies’ 307 total.
Pakistan also got a half-century from Imam-ul-Haq, who got 53 from 75 balls including seven fours.
Earlier, Australia were powered by Warner’s first century of the tournament. He scored 107 off 111 balls with11 fours and one six and featured in an opening partnership of 146 with skipper Aaron Finch, who got 82 at better than a run a ball.
However, Pakistan pacer Mohammed Amir returned in a second spell to root out the middle and lower order and finish with five for 30 to restrict Australia to a gettable total.
Australia 307 (David Warner 107, Aaron Finch 82, Mohammad Amir 5/30) v Pakistan 266 (Imam-ul-Haq 53, Mohammad Hafeez 46, Wahab Riaz 45, Pat Cummins 3/33, Mitchell Starc 2/43)
Result: Australia won by 41 runs