Marcos Rojo must have dreamed of playing in the Superclasico against River Plate when he joined Boca Juniors earlier this year but his taste of Argentina's biggest fixture in front of fans did not last long.
The former Manchester United defender was sent off in only the 16th minute of Sunday's game at River's Monumental stadium after picking up two yellow cards in two minutes.
The red card cost his team dear as Julian Alvarez struck twice for River in the first half.
Boca managed to avoid a humiliating result and managed to pull goal back in added time through Carlos Zambrano but still lost 2-1 as some 50,000 River fans celebrated victory in the first Superclasico to take place in front of fans since 2019.