CHICAGO - The trainer Clayton Pierce never has had more than a handful of horses in his stable. A handful, in fact, constitutes a somewhat populous season. But every now and again a decent one comes Pierce's way, and Ripe Tomato is at least decent. She has won two of her four starts, finished second and third in her two others, and looks like one of the primary contenders in the featured seventh race on Monday at the National Jockey Club meet.