As it stands, Russian Federation sits at the top of the group, followed by Portugal and Mexico while New Zealand, who were thumped by the hosts 2-0 on Saturday, are bottom. "It was a fair result for how the teams played".
Mexico controlled possession and spent more time in Portugal's area, but the Euro 2016 champions were a constant threat on the counterattack in front of 34,372 fans at the Kazan Arena.
The Besiktas winger drew Mexico's goalkeeper Guillermo Ochoa and tapped home the opening goal.
Carlos Vela crossed for Hernandez to finish from close range after an error from Raphael Guerreiro and the goal gave Mexico the jolt of confidence it badly needed, with the game on the verge of slipping away and Ronaldo looking in a menacing mood.
After an explosive opening period, the second was a much tamer affair as both teams squandered half chances as the tempo dropped.
"We wanted to win, of course, but we have to be satisfied with this result against the European champions", Chicharito said.
It isn't like Santos doesn't have options. Santos' decision to bench young hot-shots Bernardo Silva and Andre Silva didn't pan out as he would have wished as the Mexicans had a massive domination over possesion.
Portugal were slow to find their feet, taking 20 minutes to get Ronaldo involved with a free-kick struck into the wall, the Madrid man then cannoning a fine left-footed effort off the crossbar when the ball broke his way again following a half-cleared cross. The idea was that center-forward Raul Jimenez would drop deeper to receive the ball, leaving space in behind the Portuguese defense for Hernandez to exploit.
Cedric Soares restored Portugal's lead on 86 minutes, but Hector Moreno's stoppage-time header salvaged a point for Mexico in their Group A opener. Minutes after coming on, he almost scored a great headed goal but Ochoa came up with a terrific save.
The on-trial technology was used to confirm Australia's second goal, when the ball appeared to brush the arm of scorer Tomi Juric.
While Ronaldo's representatives have refuted the allegations, they have not denied the reports the player wants to leave Spain, fuelling what promises to be the biggest transfer saga of the summer. Vela showed glimpses of what he can bring in these big matches, while Carlos Salcedo had an afternoon to forget.