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Should you really keep your left arm straight?

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“Keep your left arm straight” is a phrase heard a lot on the golf course. Some golfers swear by it, while some are skeptical of its importance and others simply cannot complete a swing with a straight left arm.

The truth is, while keeping the left arm straight is not absolute imperative, it does help most players hit the ball farther and more solid. That’s because a straight left arm creates width at the top of the swing, which helps golfers create more speed and consistency. 

Below, I’ll teach you how to fix the bent left arm and properly keep your left arm straight.

What I usually see in golfers’ backswings

Screen Shot 2015-03-05 at 12.41.09 PM

  • The left arm is bent. 
  • The right arm is bent very acutely. 
  • The hands are very close to the head. 
  • There is very little width.

What I’d like to see

Screen Shot 2015-03-05 at 12.41.26 PM

  • The left arm is straight.
  • The right arm angle is 90 degrees. 
  • The hands are “away” from the head. 
  • The wrists are fully hinged. 
  • The shoulders are fully turned over the top of a controlled lower body.
  • The backswing is parallel, with maximum width at this point.

The things I like to see in a backswing are very difficult to achieve for multiple reasons, the biggest being flexibility. That’s why having a perfectly straight left arm at the top of your backswing is great, but sometimes is unrealistic, and not always necessary.

Heck, Curtis Strange won back-to-back U.S. Open’s with a bent left arm!

Just because you can’t make a full turn with a straight left arm doesn’t mean you cannot create width in your swing, which is why we wanted a straight left arm in the first place. So forget about the left arm!

It’s all about your right arm’s position at the top

Screen Shot 2015-03-05 at 12.41.37 PM

Whenever the angle formed between the upper and lower arm becomes very acute (as shown on the left), you will lose width and your left arm will bend. This results in a loose feeling at the top of the backswing, and leads to a sloppy transition.

By keeping this angle wide (as shown by the photo on the right), you’ll find that the left arm will react and you will have more width. To achieve this feeling, think about pushing your hands — especially your right hand — out away from your head during the backswing.

If you want a straighter left arm, focus on your right arm at the top and you’ll create the width you desire!

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Tom F. Stickney II is the Director of Instruction at Combine Performance in Scottsdale, Arizona. He is a Golf Magazine Top 100 Teacher, and has been honored as a Golf Digest Best Teacher and a Golf Tips Top-25 Instructor. Tom is also a Trackman University Master/Partner, a distinction held by less than 60 people in the world.

13 Comments

13 Comments

  1. Beth

    Jul 4, 2016 at 9:07 am

    I am a fairly low handicapper trying to improve technique. I do have a slight bend in my left arm. in an effort to straighten it i lost the cock in my wrist and my swing felt much less fluid.

  2. Pingback: Handstand - How to do a Straight Arm Press to handstand tutorial - Must Have Yoga Gear

  3. Dennis Clark

    May 28, 2015 at 10:27 pm

    agreed Tom. Too many golfers worried about “keeping right elbow in” ruin their width.

  4. Mike

    May 28, 2015 at 12:05 am

    Interesting that in the top two sets of pictures, after getting more width with a straight left arm, the golfer’s head (and shoulders) have slid well back off the ball in comparison to the top set with the bent left arm. Are you advocating sliding back as part of a correct swing?

    I use to slid a lot, which I’ve fixed, but I’m also not hitting it as far. Should I go back to my “twister’ move?

    • MHendon

      May 29, 2015 at 12:35 am

      Just my two cents. It doesn’t look to me like he has slid off the ball, his head position is basically the same in both swings. However the straight left arm swing has a much bigger shoulder turn and hip turn. That’s probably what has given you the impression he has slid off the ball. If you want to be a consistent ball striker it’s best not to slide off the ball. The closer your eyes stay to the set up position the easier it is to return the club to the ball square and towards the center of the club. Best tip I ever got was to imagine a poll fixed to the ground is going up through the center of your body all the way to your neck. Because its cylindrical you can turn but you can’t slide. It helps keep you centered over the ball.

  5. Regis

    May 27, 2015 at 10:46 am

    Ok now a question that has been plaguing me for years. In an effort to keep the “left arm straight” I sometimes rotate my left elbow clockwise at address. So the elbow points more down the target line as opposed to my left hip. Also strengthens my left hand grip a bit. When it works it works well. Any thoughts?

  6. Bob

    May 27, 2015 at 10:10 am

    I think if your left arm throughout the backswing is the same shape as it was at address, that’s straight enough.

  7. Paul

    May 26, 2015 at 10:52 am

    no stills of Bubba Watson at the top with a bent arm? J.B. Homes? They seem to hit it far.

  8. Jeez Utz

    May 25, 2015 at 3:11 pm

    I don’t care about the arms during the swing as long as the butt of the grip is on the correct line

  9. Tom Stickney

    May 25, 2015 at 2:10 pm

    Thank you Stephen.

  10. Minh Nguyen

    May 25, 2015 at 2:09 pm

    Good article. Same exact thing my instructor preaches to me. He mentioned the “Swing Extender” Training Aid. Not the easiest training device, but it definitely keeps the “right” arm from from bending past 90 degrees.

    http://www.swingextender.com/

  11. Cons

    May 25, 2015 at 1:14 pm

    Tom- Could you not make an argument that slight bend (and I mean slight) in the left elbow can lead to added distance in that you have created another ‘lever’ in the swing?

    Personally I stay away from this, but I have heard the argument before.

  12. Stephen Lee

    May 25, 2015 at 12:14 pm

    i went out to local course with my dad yesterday and i saw the picture on the top all day long.

    because his swing width is narrow, his tempo on the backswing was hasty and resulting downswing was well out of tempo. moreover, his bent left arm never fully extended, he didnt have any space to accelerate and extend on downswing resulting weak and very thin shots. I hope what you suggested in this article helps my dad and become a better golfer.

    I have utmost respect for your effort and time put in the work and always appreciate your quality articles Mr. Stickney. Thank you very much.

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