Royals infield prospects Eric Hosmer and Mike Moustakas are struggling lately. Hosmer, a first baseman for Double-A Northwest Arkansas, is hitting .243/.300/.486 in August. Overall, Hosmer is hitting .304/.366/.647 in the Double-A Texas League this season. He has nine home runs and 21 RBI. Moustakas, a third baseman for Triple-A Omaha, is hitting .250/.265/.458 over his last 10 games for the Royals. He is hitting .248/.258/.427 for Omaha in 27 games (117 at-bats) in 2010. Playing for Double-A Northwest Arkansas, Moustakas hit .347/.413/.687 with 21 home runs and 76 RBI in just 66 games.