DUBAI, United Arab Emirates — He came to Dubai in search of what he called an “international” victory, one that would underline his highest-ranking status in the field (No. 5) for the 30th Omega Dubai Desert Classic. But there was also an inexorable quality to the manner in which Bryson DeChambeau went about his business at the Emirates Club. Second after the opening round, the 25-year-old Californian was tied for the lead after 36 holes, then one stroke out front with a round to play. Right from Day 1, it was clear he was the man to beat in the race for the $541,660 first-place check.