Moustakas has been ruled out for the rest of the season with a torn ACL, Rustin Rodd of the Kansas City Star reports.
The Royals will turn to Cheslor Cuthbert and Whit Merrifield in the short term, but they might be forced to seek for a trade in the long run. Moustakas' loss is a big one for Kansas City, as the third baseman was expected to be a key part of the Royals' offense, and he hit .240 with seven homers in 104 at-bats. Outfielder Brett Eibner was recalled from Triple-A as a corresponding roster move.