Royals placed RHP Luinder Avila on the 15-day injured list with right forearm tightness.
Avila was knocked around for six runs over 2 2/3 innings in a losing effort against the Rockies on Saturday and perhaps the forearm issue contributed to those struggles. No word yet on the severity or how long the 24-year-old hurler will be sidelined for. Aaron Bummer was recalled from Triple-A Omaha in a corresponding move.