This months subject is Matt Cormack playing out of Remuera Golf Club in Auckland off a +1 handicap. Matt is a very accomplished golfer in his own right having played at an extremely high level in New Zealand and overseas, and he presents with some really
Jacques Nortje looks at the swing of Rosie Keddell, Women's Blacksticks player and friend of She Loves Golf.
Equipment used in assisting with this swing analysis included a high speed Casio video camera, K Vest 7.4 (3D golf swing analysis technology), a Flight-Scope Xi Tour launch monitor, and Titleist Pro V1 golf balls.
Matt is just coming off left knee surgery (a full meniscus tear repair procedure) and as such he experiences a little left knee tenderness post round. He does not have any other known physical issues and has historically battled a high right shot with the driver which he severely dislikes.
CLUB AND BALL AT IMPACT
Matt's average club head speed is 90mph with a 6 iron and his shots flew an average of 161m. Matt delivers the club into the ball a little steeply and the club is also coming across the ball (travelling outside to in) quite a bit. The ball flight is launching a little low and not spinning much.
In setup Matt's arms are quite jammed to his chest as his shoulders are sitting quite forward. His left hand grip seems very strong which together with his outward left elbow position is contributing to the overall forward orientation of his
shoulders. This has pre-disposed him to loosing some width/ room at impact as the body does not have enough space to drive his arms and the club through the ball without sacrificing his timing. His knee positions and general set of his balance appear to also have him a little on his left side. As he starts the swing we can see the arms led by the hands dragging across his body (gold line in picture 1), and then lifting above the plane of his shoulders to the top of the swing. This is why at the top his hands appear quite high and the club is slightly laid off. This causes the upper body to lose its desired shape and as shown by the green line in picture 2, his upper spine is virtually orientated toward the target at the top of the swing. This is a concern for injury prevention due to the pressure this places on the spine under load. This has impaired his ability to correctly shift into his right side on the back swing and because of this he has lost the ability to utilise the big muscles of his core to produce more power. This is shown by the green line in picture 1 which shows his upper body starting the downswing, and it actually accelerates faster than his lower body which is again a power loss. Matt is under rotated at the top meaning he has a fair bit of general tightness in and around his thoracic spine and also his hips/pelvis. He has also somewhat loaded on his left side which could be related to his left knee issues or mean he has a weak left side. Moving into impact we can see he loses height and has a 'rounded' shape of his spine. We can see his upper body actually move backwards which is a mechanism to essentially re-connect his arms in front of his body to get back to the ball, making him lose width. These movements are mainly the result of his back swing and resultant transition movements. It does however force his hands and arms to travel much faster (relatively speaking) through impact than his upper and lower body. This is shown by his peak speed numbers at the bottom of picture 1 and is seen by his hands almost flipping the club over after impact. Overall the club has been controlled by the hands and arms versus the core (big muscles) which is a common pattern for golfers who have issues with shots that fly left to right in the air. Matt's movements are very consistent and noticeable improvements could be made in straightening out his ball flight and adding a bit of yardage. Postural awareness, a discussion around swing concepts and movement pattern re-training on his back swing to ingrain the right feels are where I would start the process, provided Matt is prepared to do the work required to improve.