MLB.com fantasy guru Fred Zinkie fielded questions from fans during a live Twitter chat at @Fantasy411 on Tuesday. Check out the chat transcript below, and follow @Fantasy411 Twitter handle and MLB.com's fantasy home. Questions and answers have been edited for clarity.
@JordanWhite_33: I have Patrick Corbin and Aaron Nola on my bench. What caliber of hitter could I turn one of them into?
Zinkie: Try to trade Corbin for any hitter you can use in your starting lineup. Hold Nola for now.
@Yo_Boo_Boo: Should I pick up Phil Hughes?
Zinkie: Yes, Hughes has made notable improvements in recent starts.
Video: NYY@MIN: Hughes throws seven scoreless innings
@boricuamanpr: Should I trade Dustin Pedroia for Rougned Odor?
Zinkie: Pedroia has the name value, but he is injured and Odor is hitting well. Make the swap.
@Beldingsbrother: I plan on dropping Kendall Graveman. Should I pick up Colby Lewis, Steven Matz, Jered Weaver, Rick Porcello or Jeremy Hellickson?
Zinkie: Pick up Matz if you have room to stash him. Otherwise, stick with Graveman.
@DeweyUCF: What type of pitcher I can get for Kolten Wong?
Zinkie: Aim for a No. 2 starter.
@leekuzmich1957: Should I trade Carlos Gonzalez after he's been so hot?
Zinkie: There is little time left in the season. Stick with him and ride the hot streak.
Video: Must C Crushed: CarGo launches two homers for Rox
@PokerDave04: Should I trade Matt Moore and Steven Souza Jr. for Jeff Samardzija in a dynasty league?
Zinkie: Unless you need Samardzija to win this year, hold Souza. His power and speed could really help down the road.
@MrART92: With Pedroia on the disabled list again, should I drop him, or keep him on my DL? I have Odor starting for me now.
Zinkie: Hold Pedroia for now. He could still provide notable production down the stretch.
@mosjeffinitely: Please rank for the rest of the season: Corbin, Taijuan Walker, Mat Latos, Jose Quintana, Gio Gonzalez and Mike Fiers.
Zinkie: Gonzalez, Latos, Quintana, Fiers, Walker, Corbin.
Video: WSH@PIT: Gio fans five, holds Pirates to one earned
@sikorsky7: Would you rather acquire Joe Ross or Josh Reddick for Carson Smith?
Zinkie: Trade for Reddick, as Ross may lose his rotation spot when Stephen Strasburg returns.
@CJ_Oliva: Who should I drop in order to add Rusney Castillo: Brandon Moss, Cameron Maybin, Jed Lowrie, John Jaso or Daniel Murphy?
Zinkie: Drop Lowrie, who will likely have a part-time role once he returns.
@jM_lR: Dee Gordon and Jayson Werth are back! Should I drop Reddick, C.J. Cron, Nola, Maikel Franco, Werth, Billy Burns, Yasmany Tomas, Jung Ho Kang or Nori Aoki?
Zinkie: Drop Kang and Tomas. I wouldn't be surprised to see a late-season fade from Tomas.
@Beldingsbrother: Would you rather own Chris Carter, Werth or Ryan Zimmerman?
Zinkie: I will take Werth. When healthy, he is a solid hitter. Time will tell if he is healthy right now.
@mosjeffinitely: Please order these hitters: Castillo, Christian Yelich and Randal Grichuk.
Zinkie: Grichuk, Yelich, Castillo. Castillo has upside, but hard to rank him ahead of players that are producing right now.
@mattwhite85: Should I add Castillo?
Zinkie: Despite his early-season struggles, Castilo should be added in all 12-team leagues and some 10-team formats.
Video: ATL@BOS: Castillo singles to short, scoring De Aza
@nmach10: Should I trade Troy Tulowitzki and Joc Pederson for Bryce Harper? I also have Carlos Correa.
Zinkie: You have the necessary depth to make this move. Go for it!
@Dylansfgcu: Would you trade Madison Bumgarner and Mookie Betts for Nolan Arenado and Michael Pineda?
Zinkie: No, I wouldn't. Betts is excellent, and Bumgarner is much more valuable than Pineda.
@DylanRafter: If Jonathan Papelbon goes to the Nationals, what happens to Drew Storen? Does he become the setup man?
Zinkie: That would seem to be the most likely outcome, if a deal happens. It would be hard to trade Storen right now. You will likely have to cross your fingers until Friday.
@MarkStormbro: How far will Mike Montgomery's performance regress and what is his current fantasy trade value?
Zinkie: His regression is already happening, and his trade value has diminished. There may still be time to trade him.
Video: NYM@WSH: Syndergaard escapes bases-loaded jam in 2nd
@bricksivy4417: In a keeper league, which starter would you keep: Shelby Miller, Jordan Zimmermann or Noah Syndergaard?
Zinkie: Keep Syndergaard, who has a very bright future.
@beanzslayton: Would you trade Scott Kazmir for Nick Markakis and Greg Holland?
Zinkie: If you need saves for the stretch run, this is a good trade.
Fred Zinkie is the lead fantasy baseball writer for MLB.com. Follow him on Twitter at @FredZinkieMLB.