coach up(redirected from coached them up)
To improve someone's skills or abilities by coaching or instructing them. A noun or pronoun can be used between "coach" and "up." I could tell she had a ton of raw talent. She just needed someone to coach her up. They hired me to coach up their managers on conversational English.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.