Outside the Arun Jaitley Stadium in Delhi , the evening builds gradually. It’s April 27 and chants of “ RCB , RCB” rise from groups of supporters as they spill out of autos and the Delhi Metro. Between the sea of Royal Challengers Bengaluru (RCB) and Delhi Capitals jerseys at entry gates, along the pavement is a parallel economy. There are blue plastic sheets spread on the concrete path, jerseys and caps in neat piles while some are draped on shoulders as a waking advertisement. It’s a market that depends on these ardent, exuberant crowds, who have paid anywhere from Rs 1,400 to Rs over 2,500 for a ticket, but their margins as merch vendors are way narrower. For 28-year-old Maahi, who has been selling jerseys for nearly 10 years, the cricket leagues remain the most reliable period of business in the year. “If it’s a good match, I can earn Rs 2,000- 3,000,” she says, arranging a stack of RCB jerseys. Originally from Bihar, she moved to Delhi after her marriage about 12 years ago.…