Mumbai went ahead twice only for Punjab to pull it back on both occasions and then the visitors took the lead through the first of two goals by India discard Sandeep Singh to raise visions of a Punjab come-from-behind win.
But the home team had other ideas as they scored in the final minute through their international Chinglensana Singh, his second goal of the game, to earn the draw.
Mumbai soaked up some early pressure from the Warriors in the opening quarter before starting to assert.
With the half line providing excellent passes, Australian Glenn Turner and Belgian Tom Boon -- along with Dutchman Floris Evers -- spelt constant danger to the Punjab citadel.
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The first goal of the match was scored in the eighth minute by junior India international Harmanpreet Singh when Mumbai earned the first of three short corners in the first 15-minute period.
Turner, part of the World Cup winning Australia squad in 2010 and 2014, almost made it 2-0 with three minutes left in the opening quarter. But his first-time deflection off a diagonal through from the left by junior international Santa Singh sailed inches wide of the right post.
Mumbai earned two short corners in succession close to the end of the quarter but both went waste.