relief pitcher
baseball or softball pitcher who relieves a previous pitcher
left-handed specialist
baseball relief pitcher who pitches left-handed and is effective when facing left-handed batters
middle reliever
baseball relief pitcher who specializes in relieving during the middle innings of a game
setup pitcher
baseball relief pitcher who specializes in pitching in close 7th and 8th inning situations
long reliever
baseball relief pitcher who specializes in pitching for multiple innings and making emergency starts
closer
baseball or softball relief pitcher who specializes in finishing games