xBA (Expected Batting Average)
A measure of what a player's batting average should have been. Similar to FIP, xFIP, tERA or SIERA for pitchers.

xBABIP (Expected BABIP)
A measure of what a player's BABIP should have been. Was Player X's .325 BABIP high or low? xBABIP answers this.

PSR (Position Scarcity Rating)
Much is made of position scarcity in fantasy baseball but how exactly do you quantify it? Using a player rating formula we've developed we're able to assess the relative strength or weakness of each position and adjust each player's rating accordingly.