May as well do a locks for the playoff roster (baring no injuries)
C: Gomes, Perez
1B/DH: Santana, EE
SS: Lindor
2B/3B: Ramirez
OFs: Bruce, Chisenhall, Jackson
SP: Kluber, Carrasco, Bauer
RP: Allen, Shaw, Smith
That is 15 of the 25 man roster
So the rest will be based off of injuries and how well they heal before coming back. Two more lists I feel need to be made, one with a fully healthy ten and who could replace them
Position players (going with 14 position players so 5 here)
2B Kipnis, LF Brantley, OF Guyer, OF Zimmer, 3B Urshela
Pitchers (going with 11 so 5 more)
Olson, Otero, Miller, Tomlin, Clev
I decided to go with Tomlin and Clev over McAllister and Goody since both of those guys can be long relievers and Clev eventually will make a start if we make it to the second and third rounds. Also there will be days off in between so I don't think we need as deep of a bullpen as the regular season (Though Francona does like extra guys in there always). Either way it seems like depth chart will be Goody, McAllister, Breslow, Merritt after the 5 I mentioned. Otero has given up one run over his last 16 innings, so its hard to no to that especially since he can get a lot of ground balls.
If Miller cannot go (which may be a big blow in a way) It will be between McAllister, Goody and Breslow to replace him. Breslow because he is a veteran lefty, while the other two guys are just solid relief arms (the hate for McAllister and Shaw on these boards just shows a bit of ignorance on how good we have it). I don't see Merritt getting a nod here for this spot.
If Kipnis or Brantley cannot go I am pretty sure it will be Diaz making the roster. If both cannot go then either Almonte/Allen or Gonzalez will take the other spot (Leaning towards Gonzalez, if Zimmer can go)
If Zimmer cannot go then it will either be Almonte/Naquin or we will move someone to the 60 day DL so we can get Allen playoff eligible.
I think that covers any scenario we can have. It is possible it changes between rounds and one of Goody/McAllister gets the nod over one of Tomlin/Clev so that is the last spot really to be decided by Francona.