Sidelined sports bettors pony up in April to boost US horse racing market Matthew Waters, Legal Sports Report · May 7, 2020 at 7:53 pm It looks like betting on US thoroughbred horse racing helped fill the gap for some sports bettors during the month of April, according to Equibase. Handle fell 24.4% to $639.4 million last month compared to last April, according to the report. But that’s a much lower drop than the decline in races and race days with many tracks still shuttered. Total races fell 71.4% to 746 last month, and race days dropped 72.7% to just 85. Equibase typically reports US thoroughbred racing figures on a quarterly basis. It moved to monthly to show the effect of the coronavirus pandemic.