As the title indicates, Eric Longenhagen of Fangraphs released his prospect rankings earlier today. It’s worth reading in its entirety, but here are a few highlights.
50 is MLB average, the equivalent of 2 WAR. 45 is below average or 1.5 WAR, 40 is 1 WAR, and so on. Remember though, that this scale punishes relievers for playing less.
At first glance, Longenhagen really dislikes Thaiss and Ward, whom MLB Pipeline has a half-grade higher. Putting Marsh at 45 instead of 50 is understandable because even though [Marsh] has great tools, he is yet to play in a minor league game.