Second division teams only lost one of the six matches played in the first day of the new Copa MX.
Rodrigo "Pony" Ruiz missed a crucial penalty that would have given Estudiantes a win in Morelia.
Carlos Ochoa took a penalty in the 55th minute to put the Monarcas ahead after a scoreless first half. Two minutes later, striker Eduardo Lillingston made it 1-1 with a good header off a cross.
Injury time yielded a penalty for Estudiantes, but veteran Ruiz shanked it wide to avoid a late victory.
JAGUARES 1-0 NECAXA
Chiapas rebounded from an awful Liga MX debut to claim victory in the cup at home against Necaxa.
Former Chivas striker Antonio "Hulk" Salazar took a pass from the wing and headed it past Roberto Salcedo to give the southeastern team its first win ever in a domestic cup.
QUERÉTARO 1-2 CORRECAMINOS
The first goal of the Copa MX campaign was struck by Correcaminos goalkeeper Iván Vázquez Mellado. The netminder took a free kick four minutes after the second half had started to put his team ahead 1-0.
Roberto Nurse made it 2-0 in the 65th thanks to a great header off a cross.
Luis Angel Landin closed the gap in the 80th minute to give Carlos de los Cobos' team a fighting chance in the last 10 minutes.
TIJUANA 0-0 MERIDA
Xolos and Venados restarted an old rivalry that goes back several years to when both teams were in the Liga de Ascenso.
Tijuana and Merida had previously fought over the second division championship, an honor bestowed upon Merida. However, Tijuana eventually gained promotion in 2011 and never looked back.
The game had two American starters in Xolos' Greg Garza and Merida's Isaac Acuña.
DORADOS 2-1 LEÓN
Cuauhtémoc Blanco came off the bench in the second half to produce two goalscoring plays for the home team in order to lead it to victory.
Blanco's expert touch yielded the game's first goal against the newly-promoted club, while a series of runs by the 39-year-old attacking midfielder later on in the match produced a cross for Daley Mena, who made it 2-0.
Later, Leon made it close with a Britos header off a corner kick.
TOLUCA 1-3 LOBOS BUAP
Edgar Benitez put Toluca ahead 1-0 in the 27th minute and appeared to have the match in hand for the 10-time league champion.
However, De Lima tied it up in the 41st minute with a fantastic volley to give Lobos BUAP a partial draw.
In the second half, Juan Carlos Cacho missed a penalty and the momentum shifted to the away team. De Lima would then complete a hat trick with two more plays that pushed Lobos BUAP to a 3-1 win.
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