MLB.com fantasy expert Fred Zinkie fielded questions from fans during a live Twitter chat (@Fantasy411) on Monday. Read through the best of the Q&A below. Questions and answers have been edited for clarity.
@MAS8823: Should I buy low on Billy Hamilton in hopes of him figuring out how to get on base?
Fred Zinkie: I would want a major discount. I'm not optimistic that he can turn it around at the dish.
@thegoldrushh: What are your thoughts on Matt Wieters? Are there other catchers to look out for with potential?
Zinkie: I expect Wieters to improve as the season progresses. Yasmani Grandal is someone else you can consider.
@PeteTheHeatMMA: Should I drop Grandal or Stephen Vogt for Jarrod Saltalamacchia?
Zinkie: You should keep your current pairing, as they should compile more counting stats this season.
@whosethattt: In a dynasty league, should I trade Jose Fernandez and Mookie Betts for Bryce Harper?
Zinkie: It's a lot to pay, but Harper is worth it. Make the trade.
@tonybkny: Which fantasy backup is worth a spot on my bench -- Aledmys Diaz or Javier Baez?
Zinkie: I would rather own Diaz, as he has a looked really good since making his debut.
@bails85: Should I drop David Peralta or Gerardo Parra for Jarrod Dyson?
Zinkie: You should keep your current players. Dyson will contribute steals, but not much else.
@Norcallie76: Should I drop Brandon Finnegan for Tanner Roark in my head-to-head points league?
Zinkie: You can make that switch. I don't expect great things from Roark, but he is better supported than Finnegan.
@samardzija32: I need outfield production. Please name an under-the-radar contributor.
Zinkie: Melvin Upton Jr. has been stuffing the stat sheet in recent games.
@ThaBasementBoys: Chris Carter is off to a good start. How do you think he will fare this season?
Zinkie: I expect him to hit 30 homers and drive in 75 runs. I also expect a batting average below .250.
@billy51300: What would be an appropriate return in a trade involving Jake Arrieta?
Zinkie: You would need to get one of the best five or six best hitters.
@BaseballNStuff: Should I stash Javier Baez or Trea Turner in a keeper league at middle infield?
Zinkie: I would stash Turner, as he could make a major impact once he gets the call in 2016.
@scott_peterson4: Please pick one for the rest of the season -- Khris Davis, Carlos Santana or Jorge Soler.
Zinkie: I will take Santana. I'm not especially optimistic about the other two players.
@real_wes_trunk: I have many good pitchers, but I am weak in the outfield. Should I trade Steven Matz for Yasmany Tomas?
Zinkie: You shouldn't make that trade. You can't make a lopsided trade due to need at this point in the year. Use the waiver wire to fill your needs.
@nmach10: Who is the better prospect to own -- Lucas Giolito or Tyler Glasnow?
Zinkie: I slightly prefer Glasnow. But I expect Jose Berrios to make his Major League debut before Giolito or Glasnow.
@Jsports_47: With Carlos Carrasco going on the disabled list, which starter should I pick up -- Mat Latos, Edinson Volquez, Jaime Garcia, Ian Kennedy or Gio Gonzalez?
Zinkie: You have multiple great options. I would take Garcia. He should serve you well while Carrasco is out.
@jorash17: I need to pick one of these starting outfielders -- Stephen Piscotty, Steven Souza Jr., Odubel Herrera or Michael Conforto.
Zinkie: Definitely go with Conforto. He can make a major impact this season.
@BigMelch24: Should I trade both Buster Posey and Starling Marte to get Noah Syndergaard?
Zinkie: No, that is too much to trade. Syndergaard is a top-tier starter for sure. But you can't trade two top-tier hitters for him.
@ljdobson9: Can I drop Adam Wainwright?
Zinkie: I think that it is too early to drop him. But he can be benched for now. Give him one or two more starts.
@Saulty22: Which pitcher can I trust out of Rick Porcello, Jonathon Niese, Marco Estrada, Roark, Rich Hill, Kendall Graveman and Derek Holland?
Zinkie: From that group, I trust Estrada. Hill likely has the most potential, but he can really hurt your WHIP.
@THRASHERNAGAOKA: Diaz has played very well. Will he still start when Jhonny Peralta comes back?
Zinkie: I can't envision Peralta as a bench player. But July is a long way away. Enjoy Diaz for now, and we can evaluate his options in June.
@alexruibal: Should I drop Joe Ross and add Blake Snell?
Zinkie: I like Snell as a prospect, but you can't drop Ross for him. Ross is also a talented young starter, and he already has a permanent rotation spot.
@rostrows: Is Tyler White worth keeping or should I try to trade him while he's still hot?
Zinkie: This is definitely a good time to try to trade him. He is unlikely to maintain his current power pace.
Fred Zinkie is the lead fantasy baseball writer for MLB.com. Follow him on Twitter at @FredZinkieMLB.