Even though this was Panama's first Copa Centroamericana action in the three-team group, it was the livelier side in the early going. Despite the bright start, the Canaleros had difficulty turning their early offensive impetus into clear chances.
El Salvador was content to wait back and break forward, looking for the tricky Rafael Burgos on the counter around the Panamanian box. With the two sides unable to create good opportunities, though, there was little work for either goalkeeper and the teams went to the locker room at halftime goalless.
The action picked up early in the second half, with both teams attacking with speed and in waves.
In the 55th minute, Panama had its best chance of the game. Marcos Sanchez streaked down the right and delivered a cross to Blas Perez, who nodded a header just wide of the Salvadoran goal.
Seven minutes later, Burgos could have put the Salvadorans ahead, when a defensive miscue ended with the ball on his foot at the six. But the Hungary-based attacker could only slam his shot wide.
As the half wound down, El Salvador looked more content to play for the draw that would give them the provisional lead in Group B after two matches. All prospects of hope for a goal ended late after Panama's Rolando Blackburn flashed a late header wide.
Panama extended its Copa Centroamericana unbeaten run to eight-consecutive games, including three straight draws.
The shutout left El Salvador goalless in four of its last five outings in the competition.
The Cuscatlecos top Group B with two points, while Panama and Honduras -- set to face off in the final Group B game on Tuesday -- have one point each.
To watch highlights of the El Salvador-Panama match, click here.