I think it is wise to look at Castro's splits this year, particularly when discussing his walk rate. The month of May was awful when it came to his walk rate: 1.7%. I've never been a fan of the whole "hey, you take x out, and his numbers look like y!" methodology, but I think it's a fair thought process when a particular time frame is a total outlier. Since May, his walk rates are: 4.3%, 5.8% and 8.8% (34 PA). Yes, his walk rate is still 4%, but when look at younger players, it is important to identify in-season trends. According to FanGraphs, walk rates are reliable after 200 PA. Since June 1st, Castro has a walk rate of 5.5% (254 PA). His LD% is down his last 140 PA or so, but that is just variance in my opinion. It is likely he will "get hot" and his LD%/BABIP will rebound. edit: thanks sneakyp