The dollar lost ground in sluggish Asian trade on Tuesday as traders locked in recent gains ahead of a raft of US economic data and corporate earnings results, dealers said. The dollar declined to 107.97 yen in Tokyo morning trade from 108.15 in New York late Monday. "The dollar faced moderate selling pressure as it was rising at a faster pace recently," said Saburo Matsumoto, chief forex strategist at Sumitomo Trust Bank.