But the effort is nowhere near a target, and the final whistle sounds. A hard-earned point for Municipal while Santos will be very much disappointed to be leaving without a third group victory.
90' +3
A late corner for Municipal, and it appears that the referee will allow them time to take it.
90' +2
Peralta commits a foul in the Municipal area, and the hosts can clear their lines with a free kick.
90' +1
Stoppage time has started, and the fourth official has indicated three minutes will be added on.
90'
A long ball by Becerra initiates a chase between Ruiz and Flores, but the latter wins the battle and holds off the Santos striker.
89'
These would be big dropped points for Santos if the result holds as Columbus Crew won earlier tonight to go to six points. That would leave them just a point clear of the Americans atop Group B.
87'
Penalty goal scored by C. Castillo for Municipal!
Goal Municipal! And the hosts are level from the spot as Carlos Castillo hits a looping spot kick past Becerra with a Panenka-style effort down the middle.
86'
Penalty to Municipal! Vides goes down under a minimal challenge from Olvera, and the referee points to the spot. Chance for the equalizer now.
85'
And now Oliva is being taken away by medical personnel. The tackle didn't appear to have anything too major to it, but it would seem that Oliva might be seriously injured as a result. Hope for the best with that situation.
84'
Romero with a half-volley from the top of the area that is deflected out. Getting a bit nervy in the back for Santos.
Minute
Description
83'
Oliva is being stretchered further off the pitch, and it appears that Municipal will have to finish this match with 10 men as they have used their allotment of subs.
82'
Cárdenas tries to latch onto a ball in the Municipal area, but Flores does well to cut him out.
80'
Free kick near the left corner for Municipal as Oliva goes down under the challenge of Arce.
79'
Cárdenas, who scored four goals against Joe Public, has the ball race off his foot and out for a goal kick as he tried to break into the area.
78'
J. Lacerda gets yellow.
The final sub of the game is for Municipal as David Aroche replaces Juan José Castillo.
77'
With a Santos attacking bearing down on him, Penedo does well to come off his line to gather a loose ball.
75'
Fifteen minutes left to play and Municipal are still very much in it to grab an equalizer.
72'
Ruiz hits an off-balance, turning shot from the top of the area that just narrowly rolls wide. Tough shot, but Ruiz made it close.
70'
Ruiz and Morales try to work the overlap on the left side, but the Municipal defense forces both off the ball with plenty numbers.
69'
Free kick to Santos in the attacking half as Guevara concedes.
67'
The pace is fierce now as Municipal press for an equalizer while Santos fight to put the match away.
65'
A harsh challenge earns Lacerda a booking for Santos.
64'
C. Morales enters the game and replaces F. Torres.
Prior to a Municipal corner, Santos make their final change with Carlos Morales replacing Torres.
63'
D. Aroche enters the game and replaces J. Castillo.
62'
J. Estrada enters the game and replaces J. Toledo.
And now a second sub for Santos as Iván Estrada replaces Toledo in a like-for-like change.
61'
F. Arce gets yellow.
C. Castillo enters the game and replaces M. Ávila.
Arce picked up a yellow after a free kick effort, and Municipal make their first change with Carlos Castillo replacing Ávila.
60'
Dangerous cross from the left by Olvera, but Penedo does well to gather as the match hits the hour mark. At the other end, Oliva comes dangerously close to the equalizer as he drags a shot narrowly wide of the target.
58'
Ávila thinks he has the equalizer in the back of the net, but the flag is up on two Municipal players ahead of the action.
57'
Corner to Municipal as Becerra collides with Rodríguez, and the fans in the stadium wanted a penalty against the Santos keeper. Romero swings in the corner, but it never troubles Santos.
55'
Arce comes forward to have a shot at goal from 40 yards, but his shot is typical for a defender as it ends up well over the goal.
53'
Another phenomenal save by Penedo denies Peralta. Ruiz swings in a free kick that Peralta heads on target, but the Panamanian keeper gets a hand down low to turn the shot aside.
52'
Great tackle on the left by Ávila denies Antonio Olvera proper space to move.
50'
Francisco Torres is cut down in the center of the pitch and it's a free kick for Santos near midfield.
49'
A looping header in the Santos area forces Becerra to touch the ball over the goal for a corner kick to Municipal. Nothing comes of the chance, however.
47'
"Chema" Cárdenas has four goals in this competition, and manager Rubén Omar Romano will be hoping he can add to his total for Santos.
46'
D. Oliva enters the game and replaces G. Ramírez.
J. Cárdenas enters the game and replaces R. Salinas.
We are back under way in Guatemala City for the second half. One sub for each side at the break as Santos replace Rodolfo Salinas with José María Cárdenas, and Municipal bring on Darwin Oliva for Guillero Ramírez.
45' +3
The half-time whistle sounds on an eventful period in Guatemala. Santos jumped out with two early goals, but Municipal got one back and have looked more than capable of getting the equalizer. It should be an interesting and exciting second half.
45' +2
Peralta gets in deep in the area, but he is well offside.
45'
Two minutes added on.
44'
This has been as wide open a half of football as any neutral observer could ever wish for. Some great goals and great passes from both sides, and a bit of physical play to boot.
43'
Great save by Penedo keeps Municipal from going farther behind. Ruiz plays Peralta through on the break, but the keeper does well to make the save from close range one-on-one with the striker.
41'
Corner to Santos as Ruiz's pullback is cleared away by Flores.
39'
O. Peralta gets yellow.
A giveaway on the right gives Ramírez the chance to cross, but Figueroa heads clear. Moments later, Peralta is given a yellow for apparent dissent.
38'
Foul in midfield against Castillo gives a free kick to Santos.
36'
G. Cabrera gets yellow.
Another booking for Municipal, this time for Gustavo Cabrera for a harsh tackle on Salinas down the right side.
35'
Ruiz tries to loft a ball from the left to the far post for Salinas, but the ball goes over the end line before the latter can reach the cross.
33'
A skirmish between Yony Flores and several Santos players allows Municipal to break the other way with Rodríguez. But his shot is stopped by Becerra at close range.
30'
Half an hour played and this has been quite the entertaining encounter at Estadio Mateo Flores. An early flurry by Santos, followed by a Municipal resurgence. Another goal before half-time would be huge for either side.
28'
M. Rodríguez has scored a goal for Municipal! Assist by M. Ávila.
Goal Municipal! Ramírez's corner is flicked to the far post by Ávila for Rodríguez who directs it into the corner. Municipal back in the game as the deficit is cut to 2-1.
27'
Great save by Becerra preserves the two-goal lead for Santos. Great ball forward finds Rodríguez, but his first-time shot is turned aside by Becerra.
25'
Ávila with another cross from the right that forces the Santos defense to scramble.
23'
Shouts for handball against Lacerda by Municipal, though mostly by the supporters. Referee Quesada is not interested.
22'
A hard tackle by Sergio Guevara on Fernando Arce gives Santos a free kick. The match is getting very physical, and there could be more cards in the future of the match if this continues.
21'
Figueroa is back up and on the pitch after being down for quite some time.
19'
M. Rodríguez gets yellow.
A harsh tackle from behind by Mario Rodríguez on Rafa Figueroa earns him the first booking of the match.
18'
So nearly the third there as Ruiz is denied from close range. Francisco Torres sends in a low cross from the left to the near post, but Ruiz's weak shot is easily stopped.
17'
Corner to Municipal. Juan José Castillo breaks fast down the left, but Jaime Toledo clears away.
15'
Municipal are two goals in the hole before a quarter hour is played in Guatemala City. It will be an arduous route back for the hosts at this point.
13'
O. Peralta has scored a goal for Santos Laguna!
Goal Santos! Ruiz with a cross in from the right and Peralta's glancing header beats Penedo to the far post. Great goal, and Santos have the rout on early.
12'
Corner to Municipal. Guillermo Ramírez serves it in, but the ball sails over everyone in the area.
10'
Municipal look dangerous early down the right flank, and they'll need the attacking impetus to overcome the early mistake by Penedo.
9'
Marvin Ávila attacks the other way with a cross from the right, but the ball is easily cut out.
8'
Penalty goal scored by R. Ruiz for Santos Laguna!
Goal Santos! "El Pony" Ruiz steps up and converts the spot kick to give the visitors the early advantage.
7'
J. Penedo gets yellow.
6'
Penalty to Santos! Oribe Peralta chases down a ball in the area, but he is cut down by a charging Municipal goalkeeper Jaime Penedo.
5'
Rodrigo Ruiz plays it short to Rodolfo Salinas, but the ball is mishit and goes out of play.
4'
Corner to Santos.
2'
The referee for tonight's game is Walter Quesada of Costa Rica.
1'
The whistle is blown and the match is under way.
Welcome to another evening of CONCACAF Champions League football, and tonight we are in Guatemala to see CSD Municipal take on Santos Laguna of Mexico in Group B play. Santos sit top of the group on six points thanks to wins over Columbus Crew and Joe Public, while Municipal have just a point from a draw against Joe Public.
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