I don't know if the expectations were too high. Hiura had a .950 OPS in the minor leagues, and was initially called up because he had nothing else to prove in the minor leagues. However, since then, teams have found out how to exploit his timing where they can throw him strikes and he can't get the bat on it, or doesn't hit it hard, and Hiura has been unable/unwilling to make a counter-adjustment. It truly is an unknown if he will be able to make an adjustment or not. MLB is littered with players who had 350 amazing at bats and were never heard from again as well as players who eventually figured it out. The Brewers are in a tough spot with Hiura. They're not going to hold the door open for him any longer, especially when they're trying to compete in their division. Then again, I'm sure they don't want to pull the plug on a player who has hit 33 homeruns in 180 big league games.