I do this all the time. But I've always wondered how often the numbers are updated. Say, for instance, I've got my eye on Dave Hardy, some prospect playing for the Hamilton Cobras, who had 120 ABs in the majors as of last month. Could I check in every week (after the stats are updated) to know whether he's going to be available in the next rookie draft? Or are the FA/Rookie stats only updated around draft time?