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.
@Six4Tre: Should I start Yasmani Grandal or Buster Posey for my head-to-head championship this week?
Fred Zinkie: I have to recommend Posey. I could never sit him.
@rhj_24324: Would you rather own Jung Ho Kang or Eduardo Núñez for the rest of the season?
Zinkie: I'll take Kang and hope that he can continue his powerful September.
@JaySox420: Which two pitchers should I start this week out of Jason Hammel, Danny Duffy, Chris Archer, Robert Gsellman and Cole Hamels?
Zinkie: Start Hamels and Gsellman in a points league. Start Hamels and Duffy in roto.
@LyndonBryanton: For the final two weeks, would you start any of Brian McCann, Jonathan Schoop, Asdrúbal Cabrera, Kevin Kiermaier or DJ LeMahieu?
Zinkie: Start Kiermaier if you need steals. Start Schoop if you need homers. If you need good hitting overall, start LeMahieu.

@nmach10: Should I start Carlos Martínez today at Coors Field?
Zinkie: I would sit. I have a hard time putting my season in the hands of a pitcher at that venue.
@JcareMy: I need one more start for my championship week. Should I use Matt Moore, Chris Tillman, Marcus Stroman or Clay Buchholz?
Zinkie: Go with Moore. He faces the Dodgers, and they aren't effective against lefties.
@MikeAronofsky: Should I use Seth Lugo, Alex Reyes or Steven Matz in my playoffs this week?
Zinkie: Use Lugo. He has been pitching well and has a predictable schedule.
@Nick_Schara: Should I use Cody Allen or Aaron Sanchez in my RP slot this week?
Zinkie: Go with the predictability of Sanchez. I wouldn't want to risk Allen not getting save chances during your playoff week.

@haralson_iii: Should I drop Marco Estrada at this point? What about Rick Porcello at Baltimore on Monday?
Zinkie: Yes, you can drop Estrada. And I would use Porcello on Monday.
@scunhill21: In my championship this week, should I use Yu Darvish for one start or Yordano Ventura for two starts?
Zinkie: Take the volume option and go with Ventura.
@bent0dd: I have Zack Greinke, Chris Sale and Kenta Maeda projected to pitch on the last day of the season. How many should I expect to actually happen?
Zinkie: My guess is that Greinke and Sale make regular starts. Maeda starts but throws about four or five innings.
@JasonJacobson33: Should I start Matt Boyd or Joe Musgrove on Tuesday?
Zinkie: Musgrove. He should get more strikeouts and has a better chance to have a great start.
@Mmilyons: Should I start A.J. Cole or Brad Peacock?
Zinkie: Cole. He will likely get more strikeouts than Peacock.
@Shadow2actual: Should I drop Gregory Polanco for Todd Frazier?
Zinkie: Yes, you can make that switch.

@al9x1: Is it safe to drop Alex Bregman?
Zinkie: Yes, he can be dropped in mixed leagues.
@Mark_SZN: Which two-start pitcher should I add out of Musgrove, Gsellman or Martin Pérez?
Zinkie: Musgrove, narrowly over Gsellman.
@JoeStraight_Edg: If Yoenis Céspedes is not healthy, should I start Jay Bruce or Brandon Drury?
Zinkie: Bruce. He has nice matchups this week.
@videnieks: Should I start Marcus Semien or Cabrera this week?
Zinkie: Cabrera. The Mets are playing well and have nice matchups.
@TheGreatWall14: Should I start Musgrove, Michael Fulmer or Ervin Santana this week?
Zinkie: Start Santana. He is pitching very well of late.

@JcareMy: Which Blue Jays pitcher should I start out of Stroman and Sanchez?
Zinkie: Sanchez. He has been much better than Stroman this year.
@BenTennant328: Will Matz be limited in his return?
Zinkie: Definitely. He shouldn't be in your lineup this week.
@jrjoef: Should I start Taijuan Walker against Toronto on Monday?
Zinkie: The Blue Jays are slumping. You should start Walker.