India's Sourabh Verma went down fighting in a three-game thriller against Simon Santoso of Indonesia in the men's singles final of the Malaysia GrandPrix Gold at Johor Bahru on Sunday. The 21-year-old Verma from Madhya Pradesh squandered a one-game advantage to lose 21-15 16-21 19-21 to former world number three in an energy-sapping one hour and nine minutes match.