The contest started with the legends singles where Mumbai captain Richard Krajicek beat his Punjab counterpart Greg Rusedski 5-4 last night.
In the women's singles, Flavia Pennetta got the better of Elina Svitolina 5-2 to enhance Mumbai's lead.
But therafter, Punjab Masrshalls made a terrific fightback, winning the next three contests to register the win.
Punjab's turnaround started with the mixed doubles event where the pair of Marcos Baghdatis and Elina Svitolina defeated Santiago Giraldo and Flavia Pennetta 5-2