BUENOS AIRES -- Boca Juniors won the Argentine Apertura championship on Tuesday despite a 1-0 defeat by Tigre in a three-way play- off on Tuesday.
Boca, Tigre and San Lorenzo all finished the play-off with three points from two games but Boca took the title on with three goals for and two goals against.
Tigre was second but had zero goal difference.
The play-off was held after the three teams finished level on points after the regular championship, where goal difference is not used to decide the title.
It was Boca's 23rd title under the various formats used since Argentine football turned professional in 1931.