Sergio is someone who has made a swing all of his own.
Like fellow Spaniard Seve Ballesteros - who learnt to play on the beach - he had to work it out for himself.
As a result he has a swing that you would not teach anyone to copy.
But somehow he makes it work for him - he's Europe's best golfer after all.
Sergio relies much more on timing and feel than someone with a more classic technique. And he's got a much faster rhythm than other golfers I've picked.
Sergio is not the tallest of players. He's only 5ft 10ins.
So he sets himself up in a much more upright stance than the likes of Woods or Harrington.
Sergio's swing is much more about feel.
You'll notice if you watch him on TV, he's quite fidgety as he addresses the ball.
He performs a lot more waggling and regripping than some players. That's because he has to feel for it more.
AT THE TOP
Until now Sergio's swing has been fairly conventional. But here's what makes it so unusual.
At the top of the backswing, the club is supposed to be pointing along the line of your shoulders straight at the target.
But Sergio keeps his club 'laid off', as the coaches call it.
Sergio Garcia's facts
Born: 9 Jan 1980, Castellon, Spain
Turned pro: 1999
Career: Six wins on the US Tour and six in Europe
Hobbies: Sergio supports Real Madrid
This means it is at roughly 45 degrees to the left of where the ideal line is.
What this means is he has to make a little loop at the top of his swing, dropping the club head back inside to get it back on track.
It's the way he played as a lad and it's obviously stayed with him. It means he has to rely much more on timing to deliver the club head at the right place.
The little loop at the top of Sergio's swing means his arms are quite late coming through on the downswing.
Ben Hogan, the great 20th century golfer, used to have a very similar swing.
And it was once thought that a late action was the key to increasing power. But this has been discredited by the likes of Jack Nicklaus.
But you'll see that the club head comes through to the ball some time after his body.
From impact onwards, it's pretty normal.
He tends to have an exaggerated follow through, with the club head practically wrapped round his neck pointing back at the target.