The purpose of this study was to determine structured batting tactics from a viewpoint of tactics patterns in high school baseball. Their tactics comprised a combination of hitting, bunt, and steal. Tactics were selected them according to out counts, ball counts, and runners. As results,
1. Many tactics were selected with runners on first and second and no out.
2. There were various tactics on the first pitch.
3. Tactics tended to bunt on the first pitch and steal after one strike.
4. Bunt was significantly low ratio except force play situation and no out.
5. Whether tactics selected bunt or hitting with runner on first and no out, tactics were selected bunt within three-run game and hit more than four-run game.
6. Low-average hitter got a bunt with runner on first and no out, low-average hitter, however, got a hitting with runner on second and no out.
In conclusions, tactics had different according to count, runner, and score, suggested to be effect on the batting average.
