KANSAS CITY -- There was more to the Royals having a record-tying six players in MLB.com's Top 50 Prospects list on Tuesday night. Their farm system also was declared the best in the game by Baseball America.

Getting to the top has been the goal of Royals general manager Dayton Moore since he took over in June 2006, but he deflected the credit.

"It's been the great work of all of our scouts and the great work that our development people have done in creating an environment," he said. "And certainly the great support that we've received from [club president] Dan and [owner] David Glass to do what we feel is best in building the farm system."

Jim Callis, Baseball America's executive editor, had high praise for the Royals.

"The Royals have one of the deepest and most talented farm systems in recent memory," Callis said. "It's unusual to see a system with three stud hitters like Eric Hosmer, Mike Moustakas and Wil Myers or four quality lefties like John Lamb, Mike Montgomery, Danny Duffy and Chris Dwyer, and the Royals have both. To show how highly we regard the Royals' system, we ranked it No. 1 before the Zack Greinke trade, which netted more top prospects."