When you practice you usually just try to bowl for strikes. When practicing for a league or tournament, most bowlers bowl for strikes and when they leave a 10 pin or something, they always press that reset button. Do they really make their spares? The answer is that they just want to bowl for the high score. Remember to not focus on your score because there is a drill called "Low Ball". It's the most important drill that every bowler should know about. The goal is to throw the ball straight at the 7 and 10 pin on a full rack. This drill will improve all bowlers score and accuracy for bowlers who average below 170.