Sprinters who win races at an above-average rate are out in droves for Sunday’s late pick four at Lone Star Park. The sequence that has a 50-cent minimum wager runs on races 6-9. It opens with a $40,000 optional-claiming sprint that drew six stakes winners and includes a second optional claimer at six furlongs in which one entrant is chasing career victory No. 21. The forecast for the afternoon program is a high of 97 degrees, with no precipitation in the mix, according to The Weather Channel. Below is a look at the late pick four.