A Boston federal judge on Monday blocked testimony by former Ropes & Gray associate John Ray III’s economic damages expert in his employment retaliation case against the firm on the ground that the expert’s written report was vague.

In a hearing before testimony resumed on the fifth day of trial, U.S. District Judge Richard Stearns in Boston said from the bench that he would exclude testimony by economist Craig L. Moore because he “does not appear to have supplemented” the preliminary analysis he offered during a deposition.