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.
Vinod, who replaced an injured Sushil Kumar in the line- up, could not mount a serious challenge to his much fancied rival and went down meekly.
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.
World champion Haji Aliev of Azerbaijan put Delhi on the front-foot straightaway, beating India's Harphool 11-4 in the 65-kg competition.
Haji maintained the momentum in the second period as well and scored five points to win the contest 11-4.
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.
The World and Olympic champion Helen was trailing 2-6 at one stage but she overpowered her opponent, rolled her over twice and then pinned her to the mat to bring Haryana back into the seven-bout tie.