Boca Juniors won the Argentine championship after beating Defensa y Justicia 1-0 in the final round.
Enner Valencia, 37, scored the winning goal in the 90+6th minute.
Boca Juniors finished the season with 63 points, one ahead of runners-up Rosario Central.
This is Boca Juniors’ 36th league title. The Argentine championship record belongs to River Plate, who have won the title 38 times.