Suppose Attorney John, representing Mr. A, is writing a brief for the case A v. B.
Representing Mr. B is Attorney Mike.
In the brief that Attorney John is writing, he cites the case X v. Y, where Mr. X prevailed on similar arguments Mr. A is relying on.
The interesting thing is that in X v. Y, the attorney who represented Mr. X was none other than Attorney Mike.
Is there any value in pointing out to the court that it is Attorney Mike who made this winning argument previously? Is this unprofessional? Is it frowned-upon? Or is it a good subtle way to win over the court?