The other day I was watching a batter foul 3-4 balls off agains Wiliams I was wondering if anyone had studied foul balls (or foul ball rates) by batters and/or by pitchers to see if anything could be garnered by such data?

Does an increase in foul balls portend well for a hitter/pitcher, or does it show he is declining? Its quite possible its and indicator of neither, but it seems to me that guys without a true out pitch are the guys that give up foul balls in bunches.

Does anybody have a link to some foul ball statistics?