(baseball) waiting for easy pitches

pitch (distance between evenly spaced objects)

use, adopt / hire, give employment, employ

use, adopt, adoption / employment, working at a job

ease / simplicity / lightness, brevity

easy / simple, uncomplicated / brief, light, short

(chiefly in mathematics, physics) for simplicity; for the sake of simplicity

wait

strategy

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend