LEXINGTON, Ky. – The big-money chances to make the 137th Kentucky Derby thin out considerably once the $1 million Arkansas Derby and $750,000 Blue Grass Stakes have been run Saturday. A handful of lesser preps remain, perhaps most notably at Keeneland next Saturday, April 23, with the $200,000 Coolmore Lexington, a 1 1/16-mile Polytrack race for which Jaycito figures to be favored.