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This concept video is answering the member question,

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what's the difference between ulnar deviation and a cast?

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Um, so I have a few videos on, um, the, the arm movements

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during the downswing and videos on the cast.

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Uh, but wanted

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to answer this member's question about what's the difference

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between ulnar deviation and a cast,

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because we are often see on video,

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and we're often told that anything that looks like this

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is a casting motion, I've released my energy,

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and then it's usually gonna be, uh, kind of too wide,

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too early, and then breaking down, um, during the release.

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Uh, but we've heard lots of, of good golfers

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and a lot of coaches advocate getting into this, um,

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ulnar deviation early.

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So let's reconcile the two.

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So we're gonna use a downswing checkpoint as our reference

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for a cast versus lag.

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Um, and then we'll talk through the mechanics of it.

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So the downswing lag checkpoint is basically looking at, um,

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when we're about club parallel to the ground,

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where's the butt end of the club in

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relationship to the golf ball?

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When you do a cast, what typically happens is we go up

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to the top of the swing and then I

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throw the club head out away from me.

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Now that has long been described as more of an unhinged

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or a yeah, an ulnar deviation or an unhinged movement.

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Um, but what I've seen on 3D is it's more of a straightening

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of the trail arm and a flexing of the trail wrist.

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Um, or potentially it could be a pulling

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of the lead shoulder kind of going like this, which throws

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that club head out there,

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releasing the angular energy a little bit too soon,

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and then it tends to kind of slow down

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or coast on the way through.

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Um, but if I was to, um, kind of separate

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the cast from the ulnar deviation, let's walk

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through the ulnar deviation verse first.

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So, if I get up here and I ulnar deviate,

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that looks like I've casted the club.

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But if now, if I was to rotate my body

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and let my arms get into a good delivery position,

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you can see from here that I'm no longer in a position

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that looks like I, I've casted it.

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Um, I've maintained the lag

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because I maintain the bend in my elbow

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and the bend in my wrist.

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Um, so this motion of unhinging,

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if I then add the extension of the wrist, add the bend

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of the elbow, and then add the turn of the body,

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it no longer looks like a cast.

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What makes this look like a cast, um, is the combination

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of the arms moving to soon

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and the body not really driving in transition.

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So the goal in this sequencing is to get the lower body

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and the core to lead.

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That helps get the arms in, in front,

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getting into this good kind of, uh,

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narrow delivery position.

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Um, and then I'm going to shallow the club by getting some

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of the width from this ulnar deviation.

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But as long as I maintain the wrist,

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wrist angles appropriately, then it's not, not a cast

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because I've still led with my body

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and I've still maintained, um, some of the, the spring

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or some of the stored energy in my wrist

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that I can release down at the bottom.

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So it can be tricky, especially, um, you know, if you

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grew up taking golf lessons in kind of the eighties

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or nineties where casting was really, um, discouraged.

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It can be a little bit tricky,

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but I think 3D has helped us understand a little bit better

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detail, um, really what's happening at the wrist

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and how you can create the different looks.

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I don't want you to look like you're ca casting it way out

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there, but, um, a lot of golfers kind

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of hold onto this angle of the wrist too long.

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Um, instead of getting

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that ulnar deviation at the appropriate time, I think that,

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um, you have to be able to separate width

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and the release from casting and more of a sequence

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or more of a, of a throw pattern from the arm.

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So let's do a little demo here.

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If I was to do more of a casting pattern, it would look,

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I'd get up to the top of the swing

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and then I would straighten that right arm

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and wrist very early

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and it would get wide

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and then kind of narrow on the way through.

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And my body wouldn't do a whole lot.

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Now if I was to emphasize the ulnar deviation,

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but still getting into, um, a good bracing

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and body sequencing,

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then it will, uh, probably still have a look

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of a good downswing lag.

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Even though I was shallowing the club with the wrist,

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I maintained the, the lag

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or the um, energy in the wrist holding the club back,

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not so much holding it up.

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I think that's one of the hallmarks

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or distinguishing characteristics between older deviation

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and the cast.