Tied 12-12, NOLA took advantage of a Toronto penalty for a high tackle to kick into the Arrows end.
Jones, named to Canada’s touring squad for test matches against Wales and England next month, was helped off with his lower left leg in a splint.
After next week’s game against Rugby United New York, Toronto could lose more than a dozen players to international duty with matches against Old Glory DC and the New England Free Jacks remaining in early July.