southpaw

A left-handed person, especially a left-handed baseball pitcher.

Using the left hand in pitching; said of a pitcher.

A pitcher who pitches with the left hand.

One who is left-handed, especially in sports.

A left-handed pitcher.

A left-handed writer who, instead of mirroring right-handed writers, turn his or her hand upsidedown in order to put the writing implement in the same position as right-handed writers.

a baseball pitcher who throws the ball with the left hand

a person who uses the left hand with greater skill than the right