Part of the Operating systems glossary: Mac OS is the computer operating system for Apple Computer's Macintosh line of personal computers and workstations. A popular feature of its latest version, Mac OS X, is a desktop interface with some 3-D appearance characteristics.
Nine 3-year-olds were entered for the 138th Preakness Stakes: The Preakness post position draw was held at the International Pavilion in the Pimlico Infield at 6 p.m. on May 15, 2013 and were broadcast live on HRTV using a blind draw. After the draw Orb was installed as the even money favorite securing the rail.
The 2013 Preakness Stakes was the 138th running of the Preakness Stakes thoroughbred horse race. The race was held on May 18, 2013, and was televised on NBC. The race was won by Oxbow. The post time of the race was 6:18 p.m. EDT. The race was the 12th race on a card of 13 races.