The NCAA asked a federal regulatory body Wednesday to stop prediction markets from offering trades on college sports until more safeguards are in place. In a letter addressed to the chairman of the Commodity Futures Trading Commission, the federal agency that regulates prediction markets, NCAA president Charlie Baker said the growth of prediction markets poses a threat to the well-being of student-athletes as well as the integrity of competition. "I implore you to suspend collegiate sport prediction markets until a more robust system with appropriate safeguards is in place," Baker wrote.