Catchers are notoriously slow to develop.

They're half of the pitching equation, after all. With so much of their emphasis on the blocking and the framing and the game-managing and the pitch-calling, the hitting kind of goes by the wayside.

So more than at any other position, you'll find players whose numbers don't measure up to the scouting reports. And more than at any other position, you'll find players who seem to come out of nowhere.

Looking at you, Josmil Pinto and Max Stassi.

Note: This list has been adjusted for Fantasy purposes. Though long-term potential is a factor, it's arguably less important than the player's expected role in 2014. These prospects don't all profile as superstars, but they're the names most worth knowing in Fantasy now.

1. Travis d'Arnaud, 25, Mets
Where played in 2013: Rookie, Double-A, Triple-A, majors
Minor-league stats: .286 BA (105 at-bats), 3 HR, 13 2B, .934 OPS, 25 BB, 23 K
Major-league stats: .202 BA (99 at-bats), 1 HR, 3 2B, .548 OPS, 12 BB, 21 K

It's finally happening. After years of maybes, eventuallys and if-onlys, d'Arnaud is finally set to become a full-fledged big-league catcher. Of course, with him, you can never be too sure. Opening day hasn't arrived yet, so he could still break his foot or tear his PCL or relive any of the other maladies that have delayed his arrival this long. In case the use of "finally" not once, but twice doesn't give it away, d'Arnaud has loads of potential, particularly for Fantasy purposes. Don't let his underwhelming late-season trial convince you otherwise. He was still working to get his swing right after missing the first four months and didn't get enough at-bats for it to mean anything anyway. While calling him another Buster Posey probably gives him too much credit, d'Arnaud's ability to hit for both average and power could make him an early-rounder in Fantasy someday. Right now, the hype has died down enough that you can probably get him late in single-season formats. He may not get drafted at all in leagues that require only one catcher per team, which makes him a definite sleeper for those willing to exercise a little faith.