Updated

Mexico City, Mexico (SportsNetwork.com) - After going unbeaten through six Apertura games America sustained its first defeat of the campaign, losing 1-0 to UNAM on a goal from Dante Lopez in the 88th minute.

America started the season with five successive wins before a draw last time out, while UNAM had claimed just one win from its first six contests.

However, as the game appeared to be headed for a draw, Lopez took control of the ball near the top of the penalty area and drove a shot toward goal that took a deflection and looped over the head of America goalkeeper Moises Munoz and into the net.

Monterrey joined America on top of the league after a 1-0 win over Queretaro thanks to a goal from Humberto Suazo in the 26th minute to give Monterrey its third straight win.

Tijuana and Leones Negros both remain in the bottom three after the two clubs played to a 1-1 draw with a second-half goal from Fidel Martinez for Leones Negros canceling out Juan Arango's first-half opener.

Morelia remains winless after squandering a 2-1 halftime lead against Puebla to lose 3-2 courtesy of goals from Javier Acuna and Wilberto Cosme two minutes apart after the break.

Jaguares downed Tigres, 2-0, with goals from Bruno Pires and Emiliano Armenteros, Pachuca held off Leon, 2-1, after a first-half brace from Hirving Lozano, Atlas and Santos played out a 1-1 draw, Cruz Azul and Guadalajara ended 0-0 and Paulo Da Silva's goal 19 minutes from time handed Toluca a 2-1 win over Veracruz.