La. Stat. tit. 9 § 5605.2
Current with operative changes from the 2024 Third Special Legislative Session
In any action for damages by a client against an attorney, the client's recovery against the attorney shall be limited to the amount of damages which the attorney shows by a preponderance of the evidence would have been the maximum amount of damages that the client could have collected in the client's underlying action in which he was represented by the attorney.
La. R.S. § 9:5605.2