UNAM Pumas remain the only undefeated team in Mexico despite having a player sent off and Argentine striker Martin Bravo missing an early penalty in a 0-0 draw against lowly Pachuca on Sunday.
Bravo missed the spot kick in the 11th minute, and the Pumas played with 10 men after Francisco Palencia was sent off in the 43rd.
After the 11th round of the Mexican Clausura championship, the Pumas lead the league and are top of Group 3 by four points from Morelia and Cruz Azul.
The top two in each of the three groups of six teams progress to the playoffs to decide the champion.
Pachuca, which has not won since the sixth round, is last in Group 2.
Also, Puebla beat Necaxa 1-0 to sit 12 points behind the Pumas in Group 3 after Yasser Corona scored in the 80th minute following a cross from Felix Borja.
It was Necaxa's second straight loss.
