Roster Expansion

As far as I know, on September 1st major league teams are allowed to expand their roster by 15 players. That means, potentially, all players on the 40 man roster can be called up. I believe as a prerequisite, you must be on the 40 man roster prior to the first. So lets look at who is currently on the roster but not active.

Pitcher
Craig Breslow
Clay Buccholz
Matt Clement *
Brendon Donnelly *
Daniel Haigwood
Devern Hansack
Craig Hansen
Kyle Jackson
Jon Lester
Edgar Martinez
David Pauley

Positional Player
Doug Mirabelli
George Kottaras
Jacoby Ellsbury
Brandon Moss

* 60-day DL

Out of these players, there are very few players i would be shocked if they got the call. I highly doubt Kyle Jackson and Daniel Haigwood. They are both struggling at AA Portland and have very little upside. Edgar Martinez and David Pauley might not get the call either, mainly for there uselessness. Neither are high upside or lefties, making them expendable. Of the positional players, George Kottaras will probably be the only player not called up. They don't need 4 catchers and they would rather start his arbitration clock next year. By my best guess, that would put the Sox at anywhere between 11 and 7 call ups. Makes a lot of sense for a team with this large of a lead.

Notable none call-ups
Chris Carter
Jed Lowrie
Justin Masterson
Bobby Scales
Royce Clayton
Travis Hughes
Bryan Corey
Abe Alvarez

This is where I get confused. From my understanding, these players can not be called up because they are not on the 40 man roster. If this fact is true, than the only way they can get called up is if they make some roster moves. Once again, i can only see Daniel Haigwood and Kyle Jackson being shafted off the roster. My guess they would fill one of those spots with Lowrie. He is a promising young prospect and would be the only infield call-up. Good chance Chris Carter or Travis Hughes would be the options for the other spot. Carter was the player the Red Sox got in return for Pena. This guy can flat out hit, so he could be a very valuable as a pinch hitter. Problem is he can't play defense and has little speed. Hughes is the closer at Pawtucket and is having a career year. With a sub-2 ERA and a low WHIP, he makes a lot of sense. The problem is, he is 29 years old and has just about no upside. Masterson would be nice, but why start his arbitration clock this year. best bet is to wait and see where he is next spring.

I'll write about who they actually call up in a couple of days, but for now those are my predictions. A team like the Red Sox in their position will probably bring up at least 7 players. They have a big lead and several players they would like to have a look at or give a rest. September call-ups often make a bigger impact of teams than the average fan would expect.