Early indications are that Hernan Perez will get the first crack at the job, though it may not be long until Matt Dominguez (pictured) gets the call.

It's been a very disappointing season so far for Carlos Gomez, but is there hope he can return to form down the stretch? Plus, Wellington Castillo, Aramis Ramirez, Chris Heston, and Brad Ziegler.

Jaime Garcia continues to display excellent skills, but ongoing health concerns means the Cardinals will probably have to tap into their depth again at some point.

Nolan Arenado, a popular breakout candidate heading into the season, has probably exceeded even the most lofty of expectations, and now looks like one of the top hitters in the game. Plus Kelly Johnson, Ben Revere, Carlos Martinez, and Jon Niese.

The Brewers will soon go into sell mode, and Francisco Rodriguez is one candidate to be dealt. So who could potentially fill his role?

Yasiel Puig hasn't lived up to pre-season expectations to this point, but now that he's healthy again, is he ready to explode? Plus, Addison Russell, Brandon Barnes, Johnny Cueto, and A.J. Ramos.

Gregory Polanco got off to a decent start this season, but is now mired in a deep slump. Could that put his job in jeopardy?

Max Scherzer is living up to expectations during his first year in Washington, but can the sub-2.00 ERA last? Plus, Mike Bolsinger, Justin Turner, Jean Segura, and Matt Duffy.

Jorge Soler is due back soon, and could make a huge impact for both the Cubs and his fantasy owners. Plus, more from around the division.

After missing all of last year, Matt Harvey has returned with his skills fully intact. Plus, Mark Melancon, Will Venable, Randal Grichuk, and Maikel Franco.

Kyle Schwarber was called up to serve as the DH for five games, and he's making a strong impression. Plus, more from around the division.