Jaini bagged his second professional title with a total score of 13-under-275 while Mukesh Kumar shot a one-under-71 to finish runner-up with a total of 11-under-277, at the Jaypee Greens Golf Resort.
The Delhi lad (68-67-71-69) had a slow start to the day as he bogeyed the par-3 third where his tee shot got stuck in the back lip of the bunker.
The 29-year-old then had consecutive birdies on the fourth and fifth where he sank putts from six feet and 10 feet respectively.
Jaini, the overnight joint leader along with Mukesh, got back in the game with a 12-feet birdie putt on the 12th to reduce the deficit to one shot. The big turnaround happened on the par-5 15th hole where the lead changed hands in favour of Jaini after he made birdie and Mukesh dropped a bogey.
Jaini, who had hit his rescue to perfection all week, produced another excellent approach shot with the club to hit the green in two shots on the 15th. He followed that up with a two-putt for birdie. Forty-seven-year-old Mukesh on the other hand found the water hazard on the 15th and thus dropped a shot.