Estudiantes won their fifth Argentine league title on Sunday after beating Arsenal 2-0 with Uruguayan international Hernan Rodrigo Lopez scoring both goals.
Lopez, who had replaced Juan Sebastian Veron in the second half, struck in the 74th and 87th minutes in front of a crowd of 25,000.
Estudiantes finished on 45 points, two ahead of Velez Sarsfield who ended their campaign with a 2-0 win over Racing.
Elsewhere, San Lorenzo defeated Banfield 2-1 thanks to goals from Jonathan Bottinelli (46) and Juan Carlos Menseguez (84). Walter Erbiti opened the scoring for Banfield in the first half.
Colon won 1-0 against Newell's Old Boys, Lucas Acosta with the only goal in the 81st minute.