In small mixing bowl, combine water and tomatoes.  Drain.  Add basil to tomatoes. Mix well.  

Prepare grill for medium direct heat.  Spray cooking grid with nonstick vegetable cooking spray.  Make a horizontal cut through center of tenderloin to within 1/2 inch of opposite side; do not cut through.  Open tenderloin like a book.  Spoon and pack tomato mixture down one side of tenderloin.  Fold other side of tenderloin over to enclose stuffing.  Tie tenderloin with kitchen string at 1 1/2 intervals.  Sprinkle tenderloin evenly with pepper.

Grill tenderloin, covered, for 16 to 20 minutes, or until desired doneness, turning tenderloin two or three times.  Let tenderloin stand, tented with foil, for 5 minutes before slicing.