have in corner
have someone in one's corner
Fig. to have someone supporting one's position or goals. (Originally from boxing.) As long as I have Mr. Howe in my corner, I feel confident about what I have to say.
have somebody in your corner
to have the support or help of someone We're lucky we've got James in our corner. No one can beat him in a debate.See be backed into a corner, fight corner, paint into a corner, turn the corner