On Wednesday, big-league rosters can expand - and will, for teams looking to reinforce their September run for the post-season.
Obviously, the Seattle Mariners aren't one of those teams.
The Mariners may not bring anyone up, immediately, choosing instead to let the members of the Class AAA Tacoma Rainiers enjoy what looks like a post-season berth. The theory is simple: Players would benefit more from playing games that matter in the Pacific Coast League playoffs than by sitting on the bench at Safeco Field.
Hard to argue.
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Eventually, however, players will be joining the Mariners. Figure first baseman Justin Smoak and catcher Rob Johnson, who spent most of 2010 in the big leagues, will return. Pitcher Ryan Rowland-Smith is another likely callup, though he may go right into the Seattle bullpen, not its rotation.
Looking for a slightly longer shot? Reliever Danny Cortes and outfielder Greg Halman are candidates to get opportunities.
Don't, however, expect second baseman Dustin Ackley. The feeling seems to be that Ackley has played enough in this, his first professonal season. If he comes up at all, it might be like teammate Michael Pineda - who'll be brought up to sit on the big-league bench, not to play.