Lone Star Park near Dallas has shuffled several of its stakes for 2002 by moving its richest race, the newly graded $500,000 Lone Star Derby, to a later date; replacing the $100,000 Mesquite Mile with the $150,000 Stonerside Stakes, a seven-furlong sprint for 3-year-old fillies May 25; and putting Breeders' Cup funds into its season-ending races for 2-year-olds, the $100,000 Middleground and $100,000 Silver Spur.