Do you ever notice that you really need something only after you've gotten rid of it?
Baseball teams have that same problem.
Some teams will find that their biggest holes could be filled by a player they previously traded or let walk via free agency. Perhaps the time eclipsed is long, like a few seasons, or short, like less than one year.
Either way, it's frustrating.
Here are five contenders who could use the services of a former player. Chances are low that they'll make a move to bring these players back, but it can be fun to imagine nevertheless.
Stats courtesy of ESPN.com.