Home US Open Cup matches have proved a poisoned chalice for the Aztex as their last loss at House Park happened almost one year ago to the day as they fell to Wilmington in the third round of the 2013 edition.
The goal scoring started in the 25th minute as Sito Seoane sent a corner in to the NTX box which found Adam Black who ran on to the ball and head it home.
The Rayados looked to respond, after losing at the same venue at the same stage in the 2013 edition, and they attacked the Austin defense almost relentlessly.
The NTX attack took a hit early in the match as Jorge Deleon took a knock and was forced off the field which brought Alberto Rodriguez on to the field, keeping the pressure on Austin.
In the 43rd minute the USASA were back on level terms as David Robledo stole possession and ran on goal, sending the ball in for Rodriguez who was able to squeeze the ball past the keeper to make it 1-1 at the break.
Just after half time the Aztex made a change to their attacking line up as Chuy Cortes was brought on for Tucker Hume, which saw Seoane move to the left.
That move proved a master stroke in the early going as Ton Rocha was able to send a ball for Seoane , now on the left, who ran on to the ball and hit it past the keeper.
In the 65th minute the Aztex could well have managed it a two goal lead as a free-kick found Andres Cuero who headed on goal but was denied by a superb diving stave.
That miss cost Austin as NTX were able to get back on level terms as Robledo was able to send a ball for Jamie Lovegrove who beat the defense and sent the ball past the keeper.
With ten minutes to play the Aztex were back in front as a corner from Jeff Harwell was able send in a corner for Tucker Hume who controlled with his first touch and scored with his second to give the Aztex a vital lead with time running down.
Bur still the Rayados responded and they sent the match to extra-time as a stunning long range effort from Tito Salas sent the match to an extra half-hour.
NTX Rayados took a lead in extra-time as Rodriguez was able to hit a curling strike around the keeper to make it 4-3 with just two minutes to play.
In the 120th minute the Aztex sent the match to penalties as substitute Jeff Harwell was able to get a header on and lift it over the keeper to send the match to the penalty shoot-out.
The shootout was clinical from NTX Rayados, as they scored all four of their penalties while the Aztex failed to score twice, sending NTX Rayados through.
The win sees the Rayados making the third round, where they will take on the San Antonio Scorpions at Toyota Field on Wednesday the 28th of May.