Yanan, taking on Maroi Mezien of Tunisia, was at her dominating best as she sealed the contest 11-2 even before the last bout was fought. This is Haryana's second consective win of the season.
Sumit picked a hard-fought 4-2 win in the last bout of the day over his compatriot Hitender to make it 5-2 in the favour of the Hammers.
With the scores levelled 2-2, Khetik Tsavalov of Russia sent Haryana ahead by eking out a convincing 10-0 victory over young Indian wrestler Vinod Omprakash in the 74-kg competition.
Earlier in the day, Delhi blocked Rio Olympics gold medallist Vladimir Khinchegashvili after winning the toss; Haryana used their card to keep Egypt's Samar Amer Ibrahim.
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World champion Haji Aliev of Azerbaijan put Delhi on the front-foot straightaway, beating India's Harphool 11-4 in the 65-kg competition.
Harphool got off a brilliant start, opening up a healthy 4-2 lead straight-away. But the Rio Olympics bronze winner Haji bounced back to finish the opening period 6-2.
Haryana bounced back in the second encounter as Sarita beat Monia in the 62-kg competition
Delhi's icon player Alborov Aslan then played with elan to beat Indias Deepak Punia 15-0 by technical superiority in the 92-kg event to help his team retain the lead.
The World Championship bronze medalist came into the bout as a strong favourite and lived up to the mantle, dominating his opponent completely to clinch the contest.
Helen Maroulis of USA made it 2-2 for the Hammers after she registered a 6-6 victory by pinfall against 2017 Commonwealth Wrestling Championship's silver medalist Sangeeta Phoghat.