The question above says what is best. There are three basic hitting styles - rotational, linear, or weight shift, and combination. It seems to be a consensus among today's hitting coaches and instructors that rotational hitting provides the most bat speed. All of today's premier home run hitters are basically rotational. In Mike Schmidt's book The Mike Schmidt Study he provides a nice chart giving distinguishing characteristics of the three styles.
Rotational hitters tend to strike out more often, hit for more power and pull the ball more often.
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