The Royals will give out Kansas City Monarchs fedoras to the first 10,000 fans through the gates on Sunday .
A group of former Negro Leagues players will be signing autographs before the game inside Gate A .
The Royals will give out Kansas City Monarchs fedoras to the first 10,000 fans through the gates on Sunday , and a group of former Negro Leagues players will be signing autographs before the game inside Gate A .