Mariners Minor League Report — September 17, by Mariners PR
KC Royals Option RHP Heasley, Announce MiLB Rosters Before Game vs. Cincinnati Reds - Sports Illustrated Kansas City Royals News, Analysis and More
The battle for Number One - Lookout Landing
Royals promote prospects Bobby Witt Jr. and Nick Pratto to Triple-A Omaha
MLB Prospect Watch: 10 awards for 2021 minor-league season as Adley Rutschman, Yankees first rounder shine
2021 MiLB Season in Review, PDF, Athletic Sports
Why the KC Royals should leave 2 hot stars in Omaha
All hail Bobby Witt Jr. - by Craig Brown
Prospects Nick Pratto, Bobby Witt Jr. Promoted to Omaha