World No. 1 Caroline Wozniacki won her fourth consecutive title at the WTA New Haven Open on Saturday, downing Czech Petra Cetkovska 6-4, 6-1 and running her event win streak to 17 matches. Wozniacki needed only 80 minutes to claim the title over the 40th-ranked Czech, who upset China’s Li Na in the semi-finals to reach her first WTA final. The championship match was moved to the early afternoon because of the approach of Hurricane Irene, which was set to bring dangerous winds and heavy rain into the area. The $618,000 hardcourt event serves a tuneup for the US Open that starts Monday in nearby New York, where Danish star Wozniacki hopes to claim her first Grand Slam title. Rain halted the title match at 1-1 in the first set and players exchanged breaks in the first four games after the match resumed. Wozniacki claimed the extra break to capture the opening set and dominated the second for the victory, claiming precious momentum entering the year’s final Grand Slam tournament.