Rentschler, a PhD senior biomechanist with the engineering consultancy ARCCA, was the third defense expert in a row to testify that in his analysis the science doesn’t point to a vehicle strike.

Dr. Elizabeth Laposata, the former chief medical examiner for Rhode Island, testified under direct questioning that John O'Keefe's injuries were not consistent with being struck by a vehicle.

The judge denied the motion after Brennan admitted he made a “mistake.”