Woods has this eight-foot putt for the match. And for $9m...

Mickelson walks up towards the bunker and sees his ball for the first time.

"Oh, it's plugged. Oh no! No," he says ruefully.

Phil knocks it out, leaving him with a 30-odd foot putt similar to the one he had about 10 minutes ago.

This time it's short, again drifts left, Tiger gives him it.

Oh my! Tiger shows us why he decided to lay up - because he backed his short game. Woods confidently knocks on a wedge, a touch of backspin leaving eight feet away from a birdie on this 500-yard par five.

Mickelson goes from it... he's short of the green! There lies water and sand... Leftie has got lucky and landed in the bunker.

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Woods arrives at his ball to assess his options. The American superstar stands behind his ball for a few moments, visualising his shot in his head. He's 235 yards from the pin.... is he going to go for it?

He's playing safe. Woods grabs a short iron and knocks it down the fairway.

Now what's Phil going to do... Attack and go for the jugular? Or play safer and hope Woods doesn't get up and down?

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Tiger's honour... he arrows his drive on the left-to-right dogleg but has overcooked it.

Initially it looks like he's in serious bother but the ball appears to kick back towards play and sits on grass. Still looks a tough ask for him to reach the green in two...

Mickelson, perhaps seeing dollar signs on the fairway, ends up in the same spot he was a few minutes ago...

Apparently there are some floodlights ready and waiting for hole 20 should we need them...

What happens now then? Back to the 18th tee...

Woods and Mickelson will play the par-four one more time and if this doesn't separate them they'll got to Hole 20.

That's a 93-yard par three which they will keep playing until we've got a winner....

Never looked likely for Mickelson. Phil barely troubles the hole as the ball whistles past left and a few feet back.

Pressure back on to Tiger. He's missed one of these today...

Not this one. And then he concedes the putt for Mickelson. Wow. I wouldn't have...

PLAY-OFF TIME!

Tiger to go first... putter in hand... sends it out right and watches it arc round towards the hole.

"Easy ball, easy," he says. He goes five feet past.

Over to Mickelson This for the match then...

...and that would mean a play-off of course.

A delightful approach by Mickelson who carries the water and plonks his ball on the green about 35 feet away. That will make Woods think...

And maybe he has thought too much. He's hit his long and leaves it in the rough.

If I was a betting man (I've almost been sucked in by this gambling fest...) I'd say both men will go down in two...

Mickelson is a picture of concentration on the 18th tee, taking his time before addressing the ball. He ends up in the first cut to the left of the fairway, just behind Woods who is smack bang in the middle.

One hole*, $9m on the line... all or nothing.

*well, if they halve the 18th then we'll have play-off holes so maybe it won't be all or nothing...

"You've been doing that crap for 20 years so I don't know why I'm surprised," laughs Mickelson as they walk up to the last.

Tiger stops for a quick television interview. "I needed something special," he says.

That's what we got...

"Oh no!" Mickelson slides his putt wide, dropping to his haunches in disappointment.

All on the last...

Woods has a wedge in his head... nailed it! Finally some excitement as Tiger holes out and heaps the pressure back on to his rival.

"Just like old times," Woods tells his caddie.

Mickelson, from thinking he would be putting for $9m, is putting for a half...

Is this Mickelson's chance to wrap it up? He sticks his ball on the dancefloor of the par three 17th, before Woods ends up on the fringe. Looks awkward...

Denham: Having the players mic'd up is quite interesting, but otherwise... meh!