While Churchill Downs begins conducting the remainder of its spring-summer meet at Ellis Park this Saturday, turf racing at Ellis will not begin until June 15, according to a notice sent to horsemen. Thus, the $225,000 Mighty Beau Stakes for older turf sprinters, which was to have been run Saturday, has been moved to June 18. It will be run at 5 1/2 furlongs, a slight change from the original five furlongs, to accommodate the different course. Nominations were re-opened for the race, which originally closed May 27.