Justin Thomas - Left Leg Stability and Power

In this video, Justin Thomas shows you how to use your left leg for a better backswing and a more powerful downswing.

  • Keep the left knee pointed out side the ball in the backswing. 
  • Shift into the left side to start the downswing and stabilize. 
  • Post up by driving the lead heel into the ground and clearing the hips. 

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William
Good information on the left leg and right foot. My question concerns the left foot. Does RST have a preference where the weight should be at impact? Should it be on the inside, center or outside of the left foot or does it matter if everything else is correct?
October 11, 2019
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Craig (Certified RST Instructor)
Hello William. Preferably the center of the ankle joint.
October 11, 2019
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William
That would seem to provide the most stable position as well as the safest to not injure your ankle long term. It's just when I watch the pros they quite often have rolled onto the outside of their foot.
October 11, 2019
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Craig (Certified RST Instructor)
Hello William. True. They tend to get a little outside because of the aggressive nature of their hips. But, I want you to be safe. Just cause a tour pro does it doesn't make it correct .
October 11, 2019
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Mehul
i can't find the straight left leg at impact video. can u help me locate it please? thanks
August 24, 2019
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Craig (Certified RST Instructor)
Hello M. That video was replaced with You Hit the Golf Ball with Your Legs Video. I apologize for the confusion.
August 25, 2019
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Stephen
I notice that JT’s left heel is off the ground at impact implying that when he shifted his weight to the left he did it by applying pressure into the ground through the balls of his feet. I thought the RST approach was to load up the right side by digging the right heel into the ground/loading up the right glute and then shift your weight by doing the opposite with the left heel/left glute.....What is the right the right method to shift weight...through the left heel or through balls of the left foot? Thanks
January 23, 2019
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Craig (Certified RST Instructor)
Hello Stephen. Through the heel. JT reaches the lift off position at impact because he is so aggressive with his hips (You Hit the Golf Ball with Your Legs Video). It can produce more club head speed, but at a cost. It puts tons of wear and tear on your lead knee. For ex: Tiger in the 2008 US Open why he start having lead leg issues.
January 23, 2019
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Brandon
With a lot of trail side help (not necessarily trail side push) how does he strike the ball consistently and where does he get leverage from to get through the ball? It seems like he's very good at maintaining his posture and leveraging the ground for power.
September 9, 2016
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Craig (Certified RST Instructor)
Hello Brandon. You don't have to have a massive squat for leverage pull. A little can still go a long way. He does spin his hips a little more for power than some RST Swingers. He releases the club well with his head staying down. The posture retention and release helps his consistency.
September 10, 2016
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Brandon
Also it looks like Justin does a good job with his lead side to pull through the ball.
November 7, 2016
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Anthony
Chris, it looks like when he straightens his left leg in the downswing this move provides his secondary axis tilt and also lowers his right shoulder and keeps the right shoulder in place, stalls the body and also keeps his head down and back. Am I looking at this correctly? Thanks
December 2, 2015
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Craig (Certified RST Instructor)
Hello Anthony. The good post up from the lead leg is helping him pull leverage from the ground. This move combined with the release is helping him stall the body. It increases his tilt a bit, but that is more linked to the forward ball position, maximizing launch angle, good release and trying to slingshot the ball.
December 2, 2015
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Loran
Should I work on posting my upper body to the left side on the downswing?...instead of relying on the left hip joint and straightening of the leg? This type of movement creates the "c" body shape and is detrimental to the hips.
November 28, 2015
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Craig (Certified RST Instructor)
Hello Loan. If you are creating a "C" shape then the weight with your upper half is falling backwards and you are not getting stacked. Level Shoulders Drill, Face On Impact Alignment and LADD Video will help.
November 28, 2015
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Nacho
Thank u very much Chris and please excuse my ignorance and my writing. I guess I'm the only Spaniard in this chat
November 2, 2015
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Chris (Certified RST Instructor)
hahaha no worries at all. We will make it more clear in some future videos.
November 2, 2015
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Nacho
Hi Chris, would u be kind enough to explain in more detail the external rotation of the lead femur during the downswing. I think this move is one of the keys to make a correct transition. Thank you v much!
November 2, 2015
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Chris (Certified RST Instructor)
Hey Nacho, the correct anatomic terminology is internal femur rotation of the lead side. At RST, we tend to use the term external lead leg rotation and I am currently working on a video that will help clarify this.
November 2, 2015
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Lee
November 9, 2015

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