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.
American Pharoah won Saturday's Kentucky Derby beating Firing Line and Dortmund. The Preakness Stakes on May 16 will be next for the winner who is trying to become the 12th horse to win the Triple Crown. The last horse to sweep the Kentucky Derby, Preakness Stakes and Belmont Stakes was Affirmed in 1978.