By Dave Tindall

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The Open championship remains on a knife-edge after another fascinating third day. But more and more it appears to be turning into a final day showdown between the world's best players.

Another virtually mistake-free round from Thomas Bjorn catapulted the Dane into the lead on Saturday. But queueing up behind him are four players who have racked up 12 US Tour wins between them this year.

Tiger Woods is the biggest danger of course, but Davis Love, Vijay Singh and Kenny Perry are all significant threats even though their names do not yet appear on the prized Claret Jug.

If it's brilliance that wins the day then look no further than Sergio Garcia. The young Spaniard, still seeking his first major, has probably played more inspirational shots than anyone this week. His 17th hole today was a classic case in point. Staring at double bogey after a wild tee shot and two hacks out of the rough, he conjured up a miracle chip-in from 70 yards to rescue par.

Below these six superstars, there are plenty who can still pull it off by playing the round of their lives. But sadly their number no longer includes Mark Roe, controversially disqualified after signing the wrong scorecard. He would have started the day just two shots off the lead.

While Woods is the hot favourite to add a ninth major, Tiger will have to break new ground to do so. His other eight wins all came from the front where he intimidated his rivals into submission.

Bjorn once played all four rounds with Woods in Dubai and came out on top so the Dane is unlikely to wilt if he hears Tiger's clattering hooves. But whether he can totally put out of his mind the two-stroke penalty he suffered at the 17th hole on Thursday is another thing.

Bjorn incurred his punishment swishing angrily at the sand after failing to get out of the bunker. Usually these things return to haunt and it would be no surprise if the golfing gods are now conspiring to make sure that Bjorn loses by one.

If so, who will be the one to pip him? The head says Tiger. But the heart is pulling for the brilliant young Spaniard Garcia.