Virginia's Colonial Downs has cancelled its Friday's card due to an excessive heat forecast. The National Weather Service is predicting heat indices for Friday ranging from 105-110 degrees Fahrenheit, numbers that examine the combined effects of temperature, wind speed, and humidity. Thursday's nine-card will still be run as scheduled with a first post of 1:30 p.m. ET. Friday's card will be brought back as drawn on Wednesday, Aug. 2. Post time will be 1:30 p.m. Officials at Colonial Downs came to the decision jointly with the Virginia Horsemen's Benevolent and...