It is said that horse racing is a game of numbers. That has been quite evident the first three days of the 105-day spring-summer meet that began at River Downs last Friday. The 40-degree drop in temperature from opening weekend last year resulted in a drop in ontrack handle of more than 20 percent. With high temperatures in the upper 20s both Friday and Saturday, along with intermittent snow flurries, only the heartiest of fans were out on the apron for the races. The open grandstand held only a few heavily dressed observers.