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 VINTAGE WILSON JACK KRAMER AUTOGRAPH WOOD TENNIS RACKET  US $59.00
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 VINTAGE DUNLOP JOHN MCENROE TENNIS RACQUET MADE OF WOOD 43 8 GRIP US $19.99
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 ANTIQUE DUNLOP FORT MAXPLY TENNIS RACKET US $10.50
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Tennis Racquet Wood
Why Tiger Woods has a Perfect Golf Swing
This last weekend, we once again had the pleasure of watching Tiger Woods playing in a Major Golf Tournament, the 2009 Masters. He injured his knee prior to the 2008 US Open, and the last we saw of him was winning that tournament in a lot of pain.
He may not have won this years Masters tournament but his swing truly is exceptional and it is alwyas worth taking a look at some video and snapshots of his swing to do some video analysis. So why does Tiger Woods have a perfect golf swing? The answer is TIMING.
Tiger shows an almost perfect example of a concept we discussed in our last post with Andy Murray's serve. Tiger creates club head speed by perfectly sequencing and timing the movement of his knees, hips, shoulders, wrists and club. In golf this is known as the kinematic sequence. The kinematic sequence in a golf swing is a little different to that of a Tennis serve, but in the end the idea for both is to create club head speed or racquet head speed by storing and then transferring energy from hips to shoulders to club or racquet, with perfect timing.
Lets have a look at Tiger Woods' swing in slow motion from some YouTube video http://www.youtube.com/watch?v=cHcP6X7dEUo . We have seen this video before, but it is a really good one. In this video we have a side on view of Tiger's swing (side on to the direction he will hit) and we can see the club throughout the swing. This makes it a great video to analyze. The video was also filmed with a high speed camera with a high shutter speed, which is why we can see the club so clearly in each frame even through ball impact.
OK lets analyse this swing by looking at the way Tiger stores and transfers energy to the ball through the golf club. If you stop the video at 0:33 seconds, you will see that Tiger is now at the top of his back swing. During his back swing he turned his hips and his shoulders away from the direction in which he will be hitting in order to store up energy for his swing.
Play the video from here and we will see how his hips start to move earlier and quicker than his upper body and that his shoulders are left behind. Tiger is starting his kinematic sequence by unwinding his back swing. The timing is important and he leads with his hips in order to create more separation between his hips and shoulders and therefore create more energy to be transferred.
His shoulders then follow and at ball strike we see that Tiger's hips are now facing the target while his shoulders are almost facing directly at the camera. This perfect timing has allowed him to transfer all the energy from his back swing, first to his hips and then from his hips to his shoulders.
Here are two images of Tiger at the top of his back swing and at ball strike, created with some free video analysis software and images of Tiger's swing.
Although these are 2 different swings, we can see how Tiger creates separation between his hips and shoulders in the image on the left and how his hips are turned toward the target at ball strike in the image on the right. The shoulders have rotated quickly as they follow in sequence from the hips, in fact they have caught up with the hips as energy was transferred from hips to shoulders and the hip rotation has slowed while the shoulder rotation has sped up. The angle between the hips and shoulders at ball strike is now much less than at the start of the down swing and we can see this in the images above.
Of course the golf swing does not end with the shoulders and there are still numerous places where the timing can be off and the golfer can lose club head speed. In the video above we can look at time 00:41 seconds and we can see that Tiger's wrists are still cocked. As we play forward from this point we will see the wrists release, transferring the energy from the shoulders and arms to the wrists and on to the club and club head at ball strike.
This last sequence happens very quickly and the golfers timing has to be perfect. Tiger Wood's is the master of this timing and we look forward to seeing more video of his swing now that he is back from injury Follow us at The Video Analysis of Sports (see link in bio), to see more video analysis of Tiger, golf and other sports.
About the Author
Dudley Tabakin is Co-Founder of Sadaka, LLC http://videosportsanalysis.blogspot.com, a motion capture and biomechanics consultancy. Clients include FootJoy, Titleist, Warrior Hockey, Vicon Motion Systems, Innovision Systems Inc. and other Sports and Motion capture and biomechanics software companies
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VINTAGE WILSON JACK KRAMER AUTOGRAPH WOOD TENNIS RACKET US $59.00
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VINTAGE DUNLOP JOHN MCENROE TENNIS RACQUET MADE OF WOOD 43 8 GRIP US $19.99
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ANTIQUE DUNLOP FORT MAXPLY TENNIS RACKET US $10.50
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