![TPI on X: "The 90/90 Test measures ext. rotation in the shoulder and scapular stability in golf posture: http://t.co/BHcQpufl6X http://t.co/NNgYROyU9w" / X TPI on X: "The 90/90 Test measures ext. rotation in the shoulder and scapular stability in golf posture: http://t.co/BHcQpufl6X http://t.co/NNgYROyU9w" / X](https://pbs.twimg.com/media/CBXzv0_WwAE9DtO.png)
TPI on X: "The 90/90 Test measures ext. rotation in the shoulder and scapular stability in golf posture: http://t.co/BHcQpufl6X http://t.co/NNgYROyU9w" / X
![This is the same backwing test Jon Rahm's coach uses on the best players | Instruction | GolfDigest.com This is the same backwing test Jon Rahm's coach uses on the best players | Instruction | GolfDigest.com](https://www.golfdigest.com/content/dam/images/golfdigest/fullset/2022/daverahm.jpeg)
This is the same backwing test Jon Rahm's coach uses on the best players | Instruction | GolfDigest.com
![Bon Test TPI (CLIQUEZ SUR IMAGE POUR INFOS) - François Gillot - coachdegolf.com - Golf Club d'Aix-les-Bains Bon Test TPI (CLIQUEZ SUR IMAGE POUR INFOS) - François Gillot - coachdegolf.com - Golf Club d'Aix-les-Bains](https://www.coachdegolf.com/images/com_hikashop/upload/test_tpi_def.png)