Good reactions from Giuliani Sarti as he plucks a header from Bobby Murdoch out of the air. The keeper really has been outstanding. And he still looks ice cool, barely a hair out of place, despite being the busiest player on the pitch.

The Inter defence get themselves in a right fankle as Aristide Guarneri and Giuliani Sarti hesitate to deal with the ball inside the six yard box. Willie Wallace is in like a flash to nick it and surely the goalkeeper hauls him down?

No penalty given. All Wallace gets is an apologetic pat on the head from Sarti.

Stevie Chalmers breaks from his own half with the smooth acceleration of a Ford Falcon, leaving a trail of Inter players in his wake, as Bobby Murdoch has two shots beaten away by the overworked Giuliani Sarti in quick succession.

Celtic's energy shows no sign of abating. Can they find a winning goal?

The Italians are resorting to a few underhand tactics now as a couple of sly kicks are aimed in the direction of goalkeeper Ronnie Simpson, then winger Jimmy Johnstone.

There's no sign of Inter changing their defensive game plan at all.

It's Tommy Gemmell yet again, although this one is not calculated. A deep delivery is aimed for the running Willie Wallace but is over-hit and comes crashing back off the junction of post and crossbar, with Giuliano Sarti almost looking ruffled. Almost...

This is getting ridiculous now. You know who with another shot from the edge of the box after being picked out by a clever header from Stevie Chalmers.

Never mind Jimmy Johnstone, Inter need to do a man-marking job on Tommy Gemmell, although it might take three or four of them to stop him in this kind of mood.

It's the Tommy Gemmell show right now! He powers forward once more and has a shot blocked, with the loose ball almost falling into his path inside the penalty box but for a last-ditch intervention from a defender.

Here comes Tommy Gemmell again, slaloming his way past a couple of challenges and firing a shot high and wide from 22 yards.

The big left-back has an incredible engine.

Tommy Gemmell fancies another goal as he drills in an angled shot but it lacks the venom of his breakthrough strike and Giuliano Sarti is able to smother it.

It's one-way traffic. It's relentless.

Celtic just keep coming and the noise level keeps going up. Supporters think goal number two has arrived for Jock Stein's men as Bobby Murdoch powers in a shot from the edge of the box but Giuliano Sarti flies across to tip it round the post.

It's getting even louder! Celtic fans are roaring for a penalty as Bertie Auld is blocked off when advancing from the left. It's just inside the box and referee Kurst Tschenscher takes the easy way out with an indirect free-kick.

Auld picks himself and pings the ball into the danger zone but it's easily snaffled up by goalkeeper Giuliano Sarti.

Celtic are going for the kill now as the noise inside the Estadio Nacional intensifies. Bobby Lennox takes a few strides forward and powers a rising shot over the crossbar from 20 yards.

Celtc left-back Tommy Gemmell picks up the game's first booking for a crunching challenge on Gianfranco Bedin.

Some nice skill from Sandro Mazzola as Inter advance. Ronnie Simpson then does well to punch clear under pressure from Renato Cappellini, with the referee awarding a foul to the Celtic keeper.

Play is quickly worked to the other end of the pitch, with Inter custodian Giuliano Sarti giving the photographers behind his goal a mouthful for retrieving the ball so quickly. He wants to eat up as many seconds as he can.

A lofted pass over the top from Bobby Murdoch takes a fortunate ricochet into the path of Bobby Lennox but the winger can't keep his first-time shot down from near the angle of the six yard box.

Full-backs Jim Craig and Tommy Gemmell are pushed so far up the pitch as Celtic continue to pepper the Inter penalty area with crosses.