Velez Sarsfield has taken the lead in the Argentine Clausura championship, defeating San Lorenzo 2-0.
Velez improved to 21 points, two more than River Plate with both clubs having played 10 games.
Olimpo, Estudiantes, and Godoy Cruz have 17 and Racing has 16. San Lorenzo is among four clubs with 15.
Wednesday's match was played after the same fixture on March 20 was cancelled following the death of a San Lorenzo fan just before the game. His was the 256th football-related death in Argentine football dating back to 1924.
Silva scored after collecting a perfect pass from midfield and then converted a 15-yard shot and Fernandez clinched the win in the first minute of stoppage time.
The match was played without fans in the stadium of Boca Juniors.
San Lorenzo fan Ramon Aramayo died on March 20 after he objected to a police security check near the Velez stadium. Witnesses said police used excessive force in wrestling Aramayo to the ground and restraining him.
An autopsy said he had bruising from the police blows but probably died of heart failure brought on by the police assault.
It was the 13th football-related death in just over a year in Argentina.