Eric Hosmer went 2-for-5 with a double and a run scored Tuesday against the Cardinals.
Lorenzo Cain was diagnosed with a strained hamstring that forced his early exit from Tuesday's game.
Making his first start since his suspension, Yordano Ventura gave up seven runs on seven hits over 5 1/3 innings in Tuesday's loss to the Cardinals.
Lorenzo Cain was lifted from Tuesday's game against the Cardinals with an apparent leg injury.
Salvador Perez is not in the Royals starting lineup for Tuesday's game against the Cardinals.
Alez Gordon is not in the Royals starting lineup for Tuesday's showdown against the Cardinals.
Danny Duffy had it going Monday, striking out eight while limiting the Cardinals to two runs over eight frames in a 6-2 victory.
Kendrys Morales went 4-for-4 with a two-RBI single in Monday's win over the Cardinals.
Ian Kennedy fired seven innings of one-run ball Sunday in the Royals' 6-1 defeat of the Astros.
Royals LHP prospect Garrett Davila earned the win by logging 5 2/3 shutout innings Saturday in his professional debut for Rookie-level Burlington.
Chris Young was thrashed for seven earned runs in only 2 1/3 innings in a loss to the Astros on Saturday.
Alex Gordon homered and doubled in his first game back from the disabled list on Saturday.
Kris Medlen (shoulder) will continue his minor league rehab assignment Saturday with Triple-A Omaha.
Royals optioned OF Brett Eibner to Triple-A Omaha.
Royals activated OF Alex Gordon from the 15-day disabled list.