The Severed Cortex

Link: http://sports.espn.go.com/mlb/recap?gameId=280428104&campaign=rss&source=MLBHeadlines

Major League Baseball has been around for more than 125 years and it always seems like something new happens every year. This is one of the reasons I like baseball as much as I do. I'm not sure if this is actually something new, but it does seem somewhat unique. Last year the Indians played home games in Milwaukee. This year the White Sox are the home team in Baltimore.
The thing that seems odd to me is that each team was allowed to enter any new additions on the roster into the game, but those that had already been in the game and had left were not allowed to play. I understand the newcomers to a certain point, but I think it would have been cooler to see them play without any members that were no longer with the team.