You wouldn't know it from his surface results, but Nick Castellanos has been locked in over the last month.
Recent batted-ball data can be very useful in MLB DFS, allowing us to notice the players who are seeing the ball well and hitting the ball with authority yet coming up short on results. Remember, your fantasy opponents may be paying attention to only counting stats like runs and RBIs or ratios like batting average and slugging percentage, which hardly tell the complete story of a hitter's performance. This is a major market inefficiency in daily fantasy, one that is easy to exploit with a look at the underlying stats.