There was a three-way tie for the lead as two Australians -- Kieran Pratt and Wade Ormsby -- and Singaporean Lam Chih Bing shared the top spot with rounds of five-under 67 each at the demanding and windy Delhi Golf Club.
Behind them was Chowrasia, a two-time winner of co-sanctioned events, at three-under 69. Seven players were at two-under 70 and another 17 at one-under 71.
While Ormsby and Pratt came back with bogey-free rounds, Lam had one bogey on the 12th. Pratt also had an eagle, one of the six, including two by debutant Indian S Chikkarangappa that landed on the day, besides a stunning hole-in-one by rank outside Nabin Mandal, who did little else of note in his round of 77.
Defending champion Digvijay Singh played a very steady one-under 71 with two birdies and just one bogey to be tied 12th in a bunch of 17 players that included seven Indians.
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Shiv Kapur playing on his home course battled with two birdies in last five holes to come into red figures at one-under 71. Also tied at 71 was Anirban Lahiri with three birdies and two bogeys, Amardip Malik, Ajeetesh Sandhu, Vinod Kumar and Gulfam (Pappan).
However, Gaganjeet Bhullar struggled to a 76 with just one birdie against five bogeys, four of which came on the back nine of the course, which was his first nine. He will need a good solid second round to ensure action over the weekend.