Chubb Corporation is the eleventh largest property and casualty insurer in the United States, with over 120 offices located in 29 countries, and offers commercial, specialty, surety, and personal insurance services. As of 2008, the corporation is the 180th largest corporation in the United States.
The United States Open Tennis Championships is a hardcourt tennis tournament. The tournament is the modern version of one of the oldest tennis championships in the world, the U.S. National Championship, for which men's singles was first contested in 1881. Since 1987, the US Open has been chronologically the fourth and final tennis major comprising the Grand Slam each year; the other three, in chronological order, are the Australian Open, the French Open and Wimbledon.