FULL-TIME The whistle goes to bring an end to a stunning end to a fascinating game. Chile were deserving winners, but Switzerland could have nicked a point with a great late chance. The South Americans should have racked up a cricket score, but wasted countless opportunities, and may be left to rue their profligacy if progression from this group comes down to goal difference as expected. One thing you can guarantee with Chile is entertainment - they aren't afraid to throw numbers forward even at 1-0, which is a rare treat in this tournament.
YELLOW CARD Valdivia is booked for diving in the area. The playmaker expected a foul so went down, but the defender pulled out at the vital moment and the Chilean holds his hands up and takes the booking with good grace.
THAT WAS THE CHANCE! Switzerland break and Ziegler's ball in is flicked on to Derdiyok. The sub should have made it 1-1, but puts his shot wide! The Swiss bench bury their collective heads in their hands. That was surely the one chance to get something from this game.
HOW DID HE MISS! Chile break in numbers and Paredes cuts inside. Surely he'll find the back of the net... but no - he puts it wide! What a miss!
HE'S CAUGHT OFFSIDE! Paredes is caught offside after fractionally mistiming his run. That was a real tight call!
WEAK FINAL SHOT Chile surge forward in numbers once again, and Sanchez finds Gonzalez with a pull-back. However, the goal-scorer lacks composure, instead opting for a poor first time shot.
GOING FOR GLORY! Gonzalez could have slipped in Sanchez, but goes for a speculative effort which is easily blocked. Chile can't afford to keep wasting these chances with such a narrow lead.
SHOCKING FINISH Paredes is clean through with only the keeper to beat, but sends his shot flying high over the bar.
TAKE HIS WHISTLE OFF HIM Referee Khalil Al Ghamdi has had a bit of a shocker today, really disrupting the flow of what should have been an entertaining game. The Saudi man seems to particularly enjoy the sound of his own whistle... will someone do us all a favour and take it off him!
FOOTWORK FAUX-PAS Isla beat his full-back, but slipped just as he was about to unleash the final ball, and a chance for Chile to double their lead goes begging. Goal difference could be key in this group, so if the South Americans can add to their tally then that may well be crucial come the final round of games.
SWISS CHANGE Fernandes is replaced by Bunjaku as Switzerland have to go in search of a goal.
GOOAAALLL!!! Chile have finally taken the lead, and it's Gonzalez who's got it. Paredes' run sends him clear behind the defence. He beats the keeper and crosses for the former Liverpool man to head past the defenders on the line to give Chile a fully deserved lead.
HARSH CALL Sanchez traps the ball inside the area, creating a shooting opportunity, but it is no surprise to hear the ref's whistle. He'd apparently spotted a handball in there somewhere.
DEFENSIVE RECORD Switzerland haven't conceded a World Cup goal since 1994 and have just broken the tournament's defensive record. It's not good to watch, but credit to the Swiss, they've put in two superb shifts so far in this tournament.
SWISS CHANGE Nkufo is replaced by the lively Derdiyok to get some fresh legs up top for Switzerland.
DANGEROUS BALL IN Ziegler's ball in almost picks out Nkufo and is palmed behind by the keeper. The youngster takes the resulting corner, and even though it's poorly hit, nearly finds a white shirt again as Chile panic at the back.
FINAL CHANGE Chile bring on a striker in Paredes to replace the booked playmaker Fernandez.
ALMOST A SUCKER-PUNCH Nkufo almost carves out a golden chance on the break for Switzerland as they look to rob three points just as they did against Spain.
ANOTHER YELLOW Medel - nicknamed the Pit-bull - picks up a booking for a push on Von Bergen. The Swiss defender's reaction was unbelievable there, collapsing to the ground as if struck by a sledgehammer, but you can't raise you arms - particularly with this ref around - and it's a slight surprise that the card wasn't a different colour.
REF'S LOSING IT The ref books Inler for a poor challenge in the centre of the park, and then inexplicably flashes a card at Fernandez too. The Chile playmaker will now miss the Spain game, and that's ridiculous from the ref.
CONTROVERSY Sanchez is having none of a drop-ball situation and nips in to win it and burst forward, eventually earning his side a corner. Ziegler is furious, and the ref has his work cut out trying to keep tempers from fraying here.
SHOULD HAVE BEEN 1-0 Sanchez's pressure earns him a clean run on the keeper. Grichting gets back to put the winger off and Benaglio pulls off a great stop to keep the scores level.
TOO MUCH ON IT Valdivia bursts into the box, but can't pick out a teammate with his ball across the area.
REF HOLDS BACK The Saudi Arabian referee has been whistle happy in the extreme in this game, but holds back on showing Grichting a yellow for a cynical challenge as Chile break.
DON'T RILE HIM Sanchez was devastated when he saw the flag raised, but has used that frustration positively, ripping into the Swiss defence time and time again. It's surely only a matter of a time before there's a goal here.
NO GOOAAALLL!!! Sanchez charges off to celebrate, but the flag is up for an offside call on a player blocking the keeper's view. Probably a fair shout.
SECOND HALF Chile get the second half underway and have made some changes, replacing the half-fit Suazo with Valdivia and bringing on Gonzalez for Vidal.
HALF TIME The whistle goes to bring an end to a fascinating first half. Chile have dominated, and with Behrami sent off will be desperate to get three points from this game.
NOBODY GAMBLED Isla bursts to the line and hammers a terrific cross in, but none of his team-mates had gambled on making a run and the ball fizzes away.
SWISS CHANGE Frei is the man to make way as Switzerland try to stem the flow of Chile attacks, bringing Barnetta on into midfield.
COMFORTABLE SAVE Sanchez can't get the ball out of his feet and can only find the arms of the keeper with his shot. That was another decent chance for Chile.
GOLDEN CHANCE The ball falls to Suazo in the box, but the striker can't keep his header down and it flies well over the bar. That could easily have been the first goal.
PRESSURE IS BUILDING That red card has ensured that this game will inevitably unfold like Switzerland's first game, with them camped on the edge of their own half trying to hold off wave after wave of red-shirted attacks. Will it end in the same result? Not if Chile keep exploiting the room out wide...
RED CARD! Behrami is sent off just half an hour into his World Cup! The West Ham man caught two Chile players inadvertently in the face with his raised arms and gets the inevitable red from an official who has had no problem with pulling his cards out. It's a debatable decision, but as soon as you raise your arms there's always the chance of a sending off.
CHILE FANS FURIOUS The travelling horde of vocal Chileans are getting increasingly riled by this referee, who is making some bizarre decisions.
SHARP OFF HIS LINE Bravo comes steaming off his line to get to the ball before the on-rushing Nkufo. It's just as well the keeper was alert as Blaise was in there.
ANOTHER YELLOW This referee is flashing cards all over the place, and this time blows for a foul for a ridiculous high foot shout on Ponce. The defender flicks the ball away in frustration and gets a booking for his troubles. How long until we see a red?
YELLOW CARD Carmona drags down Behrami and picks up a deserved booking which will keep him out of the game against Spain.
HARSH DECISION Isla burst forward from full-back and puts Suazo away, but the move is halted for a rather harsh handball decision.
YELLOW CARD Nkufo picks up a very harsh yellow for a shirt pull. That's a tad strong by the Saudi ref Khalil Al Ghamdi.
AIR KICK Suazo completely misses the ball after Chile carve open the Swiss defence down the right. It's all about the South Americans so far, they've been electric going forward.
BENAGLIO AT HIS BEST Vidal and Carmona both test the keeper with stinging shots in a scintillating Chile move, and the keeper did well to prevent the rebounds falling to a red shirt.
SLOW START Chile are controlling possession in the opening stages, but as of yet have created little in the way of chances.
ALREADY CAUSING PROBLEMS Sanchez was very impressive in the opening game, and is already causing left-back Ziegler some problems, winning a free-kick out wide. However, it comes to nothing as the defender makes amends with a clearance at the near post.
YELLOW CARD Just 90 seconds into his World Cup, Suazo picks up a booking for a late challenge in the centre-circle. Tad unfortunate to see yellow for that as both players had their feet raised.
KICK-OFF Switzerland get the game underway.
THE LINE-UPS Humberto Suazo - top goal-scorer in South American qualifying - returns for Valdivia. Switzerland bring in Frei, Von Bergen and Behrami as expected.
THE ANTHEMS The teams are out and here come the anthems. First up is Chile's jaunty march, which receives a tremendous reception in the glorious Nelson Mandela Bay Stadium.
EARLY TEAM NEWS Star Chilean striker Humberto Suazo is expected to return and add goal threat to a thrilling attacking unit, while the Swiss will be able to call upon their talismanic front man Alexander Frei, as well as Valon Behrami. However, Philippe Senderos will miss out with the ankle injury he picked up against Spain.
PREVIEW The leaders of Group H clash in a match that could leave one of these teams on the brink of reaching the last 16. Switzerland pulled off the shock of the tournament to beat Spain 1-0 in the opening round of games, but will have to be at their defensive best again to get a result against a Chile side who played some astonishing football in their 1-0 win over Honduras.