QUOTE (Ozzie Ball @ Apr 29, 2014 -> 09:36 PM)
It's based on people physically recording the data based on their interpretation. As a result it is susceptible to some inaccuracies, particularly on the classification between some fly balls and line drives. Fangraps' batted ball data comes from Baseball Info Solutions who use video feeds for their data collection. MLB uses stringers at the ballparks, as does STATS. As Colin Wyers notes, both BIS and STATS are professional data providers, so should be more accurate than MLB Gameday.
That's what I kind of figured. Thanks!