In a match reduced to 45 overs a side, Punjab managed to score a none-too-impressive 182 for six with Yuvraj Singh managing only 15. It was Taruwar Kohli (50) and Gurkeerat Singh Maan (47), who put on a steady stand to see Punjab past 180-run mark.
In reply, Delhi knocked off the runs with an over to spare as veteran Rajat Bhatia (58 no) anchoring the chase to perfection with a 72-ball knock that had five fours and two sixes.
Among Delhi bowlers, medium pacer Sumit Narwal (3/23) had the best figures while Ashish Nehra (2/41) also didn't bowl badly.
When Delhi started the chase, Sehwag was dismissed for a first-ball duck as he nicked a swinging delivery from seamer Sandeep Sharma to wicketkeeper Geetansh Khera.
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Gautam Gambhir (22) and Unmukt Chand (19) did put up a partnership but it was nothing significant. It was left Bhatia and Puneet Bisht (30) to steer Delhi towards a win.
Delhi now have four points from two matches while Punjab are staring at zonal leg exit after successive defeats from two matches.
Brief Scores: Punjab 182/6 (Yuvraj Singh 15, Taruwar Kohli 50, Gurkeerat Singh Mann 47, Sumit Narwal 3/23, Ashish Nehra 2/41)
Delhi 188/6 in 44 overs (Virender Sehwag 0, Gautam Gambhir 21, Rajat Bhatia 58 no). Delhi won by 4 wkts
Points: Delhi 4; Punjab 0.