Biggest holes left to fill

Alex Rodriguez will be out for much of 2013, and the Yankees don't have a viable replacement. Joy R. Absalon/US Presswire

Although this year's winter meetings were regarded as relatively slow, only seven teams checked out of the Opryland without making some sort of move. While Zack Greinke and Josh Hamilton remain at large and Dan Haren was the highest-ranked free agent removed from the market, many clubs found ways to fill holes during the four-day event. But even though the most eventful week of the winter is over, it's still fairly early in the offseason, and a number of teams left Nashville with help wanted at one or more positions.

Here are six winning teams from 2012 that will have to plug major holes before Opening Day to return to contention in 2013:

New York Yankees: Half a lineup