For quite a while I have been blessed with some very dominate pitchers averaging double digit K's in a game. For the most part my pitch calling was not about K's or ground balls. Just throwing balls to a batters strengths and strikes to a batters weaknesses. The high K's were a result of how well the pitcher was throwing and the abilities of the batters. The only time I try to specifically get a K is with a batter that is weak in which case I go right at them. I have had my share of riseball pitchers and some very good drop ball pitchers. What I have noticed is that when a riseball pitcher threw one that did not move it got hit hard. Where with a dropball pitcher even if the ball did not move it was at least down in the zone. I think that the reason you typically see more K's from riseball pitchers at the elite level is a great riseball is harder to hit than a great dropball.