MLB.com fantasy expert Fred Zinkie fielded questions from fans during a live Twitter chat (at @fantasy411) on Monday. Read through the best of the Q&A below. Questions and answers have been edited for clarity.
@toddkc80: Even though he has an uncertain role, is Hernan Perez worth drafting in a mixed league?
Fred Zinkie: I believe Perez should be drafted in mixed leagues on the expectation of 10 homers and 25-30 steals.
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@rangersfantasyb: What can I expect out of Junior Guerra?
Zinkie: I'm expecting an ERA around 3.75 and a WHIP around 1.28. Overall, a mix-and-match option in most mixed leagues.

@pcurran22: I have Jason Kipnis in a keeper league. Should I be worried about his shoulder injury?
Zinkie: At this point, you don't need to worry about injuries for players who were healthy last season and are expected to be ready for Opening Day.
@texhonkey: I have Byron Buxton on my bench. Should I drop him for Jarrod Dyson, Domingo Santana, Mitch Haniger or Jorge Soler?
Zinkie: You should definitely keep Buxton. His upside for 2017 is tremendous.
@CubbyNole: How high do you see Hunter Renfroe going in 12-team drafts?
Zinkie: He's a fine later-round pick, but I wouldn't draft him earlier than the rounds when you fill your bench.

@rj_kruszynski: What is the deepest position this year?
Zinkie: Third base is really deep. Middle-infield spots are also deeper than usual.
@JoeIannacone: Who would you keep out of Jose Altuve or Mookie Betts?
Zinkie: I would keep Betts. But Altuve is very close to Betts in keeper value.
@nickdoehrmann: Would you keep Alex Bregman or David Dahl in 10-team league?
Zinkie: I would keep Bregman. Beyond possibly having a better skill set, his role is more secure.
@FClefAce: Should Michael Trout be the first pick in all leagues?
Zinkie: Pretty much. He should go first in all roto leagues. It's fine to consider Clayton Kershaw in a head-to-head league.

@nmach10: In a points league, what is your theory on drafting closers?
Zinkie: I usually get one top-10 closer and the rest of my relievers near the end of the draft.
@theginganinja18: Do you think Bryce Harper will bounce back to top-five form? If so, is he worth taking in the first 10 picks of a mixed-league draft?
Zinkie: I believe there is a solid chance he can be a top-five player this year. He belongs late in the first round of '17 drafts.
@kjsull: Do you prefer Jonathan Lucroy or Gary Sanchez?
Zinkie: I prefer Lucroy. His consistency is underrated. I expect him to be slightly better than Sanchez.
@ajba2710: Should I keep Kyle Schwarber or Tyler Glasnow?
Zinkie: Schwarber. Unless the value is significantly different, you keep the hitter.

@BPlim2: What are your predictions for Marcus Stroman?
Zinkie: I'm expecting an ERA around 3.70 and a WHIP around 1.22. He's a mid-rotation starter in mixed leagues.
@calebccox: Which Mets starter would you target in a draft?
Zinkie: Based on ADP, Matt Harvey and Steven Matz are great targets. Overall, Noah Syndergaard should be the most valuable.
@jpabloff92: Who do you expect to be the best rookies this season?
Zinkie: Andrew Benintendi, Dansby Swanson, Yoan Moncada, Jharel Cotton, Glasnow.
@alexgalan_18: In a dynasty league, would you draft Carlos Correa or Corey Seager?
Zinkie: I'll take Correa. They are both great and should be first-round picks in a dynasty league.

@einstein2u: Do you see a breakout coming for Javier Baez?
Zinkie: I do not. I expect that his playing time will continue to be erratic this season.
@dnbjames34: Should I keep Trea Turner or Starling Marte?
Zinkie: Definitely Turner. He could be special this season.
@GeekyBaseball: Is Michael Conforto worth a late-round draft pick?
Zinkie: Yes, in 15-team leagues. Not yet in shallower formats.
@skinny_vinnie: Why does Danny Salazar fly under the radar?
Zinkie: Injury concerns are holding down his value. Also, he has had bouts of inconsistency.
@RyonBizark: What do you expect from Ryon Healy this season?
Zinkie: I'm expecting him to hit .270 with 20 homers this season.