Down by a goal till the first three quarters, it took a spirited fightback from the Warriors to maintain their winning streak, pumping in three goals in the fourth and final quarter through Christopher Ciriello (50th minute), SV Sunil (54th) and Affan Yousuf (56th) at the Major Dhyan Chand National Stadium.
The Waveriders, however, were first to break the deadlock through Simon Child's field strike in the third minute.
But it was the Waveriders who struck early through Child's superb strike.
Child deflected in a fantastic diving goal after being set up by Akashdeep Singh's pass from the left flank.
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Stung by the early goal, Punjab went on the attack but failed to find the back of opposition net as the first quarter ended with Delhi enjoying a slender lead.
Punjab Warriors continued to mount attack on the Delhi defence in the second quarter and in the process managed to equalise through Malak Singh. But the Waveriders went for the referral for an infringement and the goal was overturned as the hosts managed to maintain their one-goal lead at the halfway mark.
But Waveriders' defensive tactics completely backfired in the final 15 minutes of the match as the Punjab outfit mounted tremendous pressure on the home team's defence with continuous raids.