25 minutes in and it's still very even. Auckland are, once again, looking like an incredibly difficult team to break down and are offering glimpses in attack that suggest they could pinch one.
Auckland have a freekick now 40 yards out from goal in a good attacking position.
Payne swings the ball in but the San Lorenzo keeper comes charging out of his area to swat it away.
Auckland coach Tribulietx will be very happy with the way the first half hour has panned out. There's not much in it at this stage.
San Lorenzo have been trying to work their way into the Auckland box but aren't having much luck. This time Irving makes a huge clearance down field.
Dangerous free kick given away from Auckland now just outside the area. Berlanga brought down the San Lorenzo striker and he went down like he had been shot. Another good chance for San Lorenzo here.
It's high over the bar from Barrientos and Auckland can breathe again. San Lorenzo have become stronger as the half has wore on and are starting to get a stranglehold on this one.
Barrientos makes a real hash of an attacking opportunity for San Lorenzo by mis-kicking the ball out for a goal kick from the byline. They don't have the attacking cutting edge so far that perhaps we expected.
Takuya is brought down now and Auckland can catch they breath. Ten minutes to go in the first half.
Bilen makes what looks like a good defensive tackle to thwart a San Lorenzo counter attack but the ref is not impressed and blows it up for a foul. The quick free kick ends up back at the feet of the Argentinian keeper though and their is no danger to Auckland.
The game has gone a little flat, but you feel that is exactly Auckland's plan. They will be very happy with this first half, they haven't looked out of place at all.
Auckland showing some nice touches in midfield now, but struggling to make any real progress in and around the box. Both teams are looking comfortable defensively.
Kanneman goes flying into a tackle with his studs showing now and recieves a yellow card for San Lorenzo. It's in a dangerous position too, ten metres outside the box on the angle.
Great chance for Auckland.
It's a good free kick but the ball is eventually cleared. Vicelich very nearly got a head on that. Five minutes to go in the first half.
It's been a scrappy half, with no real clear goal scoring chances for either teams. San Lorenzo started to dominate after around 20 minutes, but they still don't really look like breaking Auckland down. Just one minute to play in the first half.
No, there's no bus parking. In fact Auckland are often pressing San Lorenzo high up the pitch, forcing them into mistakes to win possession back.
With the last kick of the first half, San Lorenzo have scored.
San Lorenzo broke down the left hand side and after working an overlap, pulled a low cross back across the box. It landed at the feet of Pablo Barrientos who blasted a left footed drive low into the corner of the net through a crowd of bodies.
HALFTIME: AUCKLAND 0 SAN LORENZO 1
Auckland City have had 54% of possession at halftime and have had two shots on goal. San Lorenzo have had a few half chances, but clinically put away their one decent one, and that has been the difference.
Auckland coach Tribulietx, who has produced a defensive tactical masterclass in this tournament, now needs to change things up. Auckland will have to go chasing the game now, which will open up more counter attacking chances for San Lorenzo.
We are back underway as Auckland go searching for an equaliser with an early attack down the right wing through Ryan De Vries.
Nothing comes from it though and San Lorenzo are quickly on the counter attack. Their pacey striker Cauteruccio breaks through the middle and has a great chance, but John Irving matches him stride for stride and executes a perfect slide tackle to clear the danger.
He had to get that just right, otherwise it was a red card and a penalty, and the Englishman nailed it. So important that Auckland don't concede early here. If Auckland can get something out of this game, they will look back on that tackle as a turning point.
A chance opens up for De Vries on the edge of the box, but the ref pulls up Tade for obstruction. Tade showed some neat feet around the box there to create the opportunity, but then got a little too physical off the ball.
51 MINS: AUCKLAND 0 SAN LORENZO 1
Auckland win the ball in midfield but once again turn back instead of quickly moving the ball forward. San Lorenzo are able to re-group and Auckland eventually give the ball away. As the game wears on Auckland will need to start getting more adventurous with their possession.
San Lorenzo beginning to look comfortable at 1-0. They are dropping deep now, forcing Auckland to create something. So far, Auckland have struggled to do so.