The right criteria can translate 2013 MLB free agents into old-fashioned letter grades. This position-by-position list attempts to do so with the top available players.
Grades simply reflect current playing ability. They factor in batting, pitching, fielding, baserunning, durability and intangibles, but not contract demands or perceived "signability." In this relatively weak free-agent class, nobody—not even Zack Greinke, Josh Hamilton or Mariano Rivera—scored a perfect A+.
Keen readers will notice that several individuals appear on multiple slides. Having flaunted their defensive versatility in the recent past, those exceptions are potential fits at several spots on the diamond.
Feel free to report any cases of players being misjudged or snubbed.