Colorado sports betting set to launch May 1 Chrstine Ricciardi, The Denver Post · April 27, 2020 at 4:01 pm When legal sports betting comes to Colorado on May 1, the landscape will look vastly different than fans and regulators anticipated. The 146th Kentucky Derby, originally slated for the same weekend, would have been one of the first events available for wagering. Major League Baseball was supposed to be in full swing. And both National Basketball Association and National Hockey League playoffs would have been heating up. Instead, the coronavirus pandemic sidelined most major events indefinitely. Though no one is certain when sports will return — or how they might be different — the Colorado Division of Gaming isn’t waiting.