Duffy was removed from Saturday's start after just one pitch with left shoulder soreness, Vahe Gregorian of the Kansas City Star reports. The extent of Duffy's setback remains uncertain, and it's not clear if he felt any soreness prior to the game, or if the injury occurred during the contest. Expect the Royals to provide another update on Duffy's status after the team's medical staff takes a more thorough look at his arm.