KARACHI - The US dollar further lost strength against rupee on Friday, trading at the highest price of Rs 103.20 in cash free/open market. According to the data provided by the Forex Association of Pakistan, dollar traded at the lowest price of Rs 102.90 and highest price of Rs 103 in inter bank while the dollar traded at minimum price of Rs 102.90 and maximum price of Rs 103.20 in open market.