Uhh, he finished 13th at Monza, 1 lap down, in a Brabham in 1991.
He finshed 2nd in 1992 though.
EDIT: Yes, you caught me out. In Formula 1 he finished 13th in 1991. However, in the April of 1991, he co-drove two Jaguar XJR14s in the Monza 1000kms, and finished first and second.