03/03/2004 1:00AM

Etc. . . .

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Almost all the leading contenders for the Triple Crown, including trainer Nick Zito's pair of Birdstone and Eurosilver, as well as 2003's champion male juvenile, Action This Day, are among 157 nominees to the Grade 1, $750,000 Toyota Blue Grass Stakes. The 1 1/8-mile race for 3-year-olds will be run Saturday, April 10, three weeks before the Kentucky Derby, and be televised live on NBC from 4:30 to 6 p.m. Eastern. . . . Churchill Downs will install two large-screen video display boards in its infield tote boards. Each board will measure approximately 18 feet high by 36 feet wide.