Mumbai, July 30 -- Reliance Infrastructure has won a Rs.157.64-crore arbitration award in its long-running dispute with the MMRDA over subordinated debt for Mumbai Metro One Pvt Ltd (MMOPL), giving the operator of the 11.4-km Versova-Ghatkopar Metro 1 corridor another financial boost. The award is the second major financial relief for the Anil Ambani-led company's metro arm within a month. Earlier this month, MMOPL secured relief that will see more than Rs.1,100 crore of its debt reduced and insolvency proceedings against it withdrawn. Reliance Infrastructure, which holds a 74% stake in MMOPL, announced the award in a regulatory filing on Wednesday. MMRDA holds the remaining 26% in the joint venture. The company said the three-member arbitral tribunal, by a 3:0 majority, awarded it Rs.157.64 crore towards the cost of subordinated debt, along with interest. MMRDA declined to comment on the development. With the arbitration award and the proposed debt reduction, MMOPL's financial position is expected to improve....