Whether you agree or disagree with who was included on that list and where they were ranked, it serves as a good third-party reference when looking at who the top players in the game were entering the season.
As we've reached the first-quarter mark of the 2013 season, now is a perfect time to look back and see how the game's elite have performed here in the early going with a good ol' stock up, stock down (or stock even) overview.
If a player is performing at an All-Star level, his stock is up.
If he is playing well but his numbers are a bit short of expectations, his stock is even.
If he has produced well below expectations or has spent substantial time on the DL in the early going, his stock is down.
Keep this in mind as you read, and before you suggest a player who has been excluded from this list, that this is not a list of the top 50 players of the 2013 season so far. If it were, everyone's stock would be up and this exercise would make no sense.
Instead, this is a look at how the players who were viewed as the top 50 players entering the season—according to a third party—have performed so far in 2013.
All stats are current through May 14 games and courtesy of MLB.com unless otherwise noted.