I think they were talking about the fact that then length of his clubs are all cut to 7 iron specifications (37" standard), not the size of his grips. Rule of thumb longer the club the farther you can hit it due to the fact you can generate more club head speed.

By doing that his long irons are going to be easier to control, but his 3 iron might not go quite as far do to the fact that his 3 iron is going to be 2" shorter (39 inches normally to 37 inches) and so forth for his 4, 5, and 6 irons.

I don't think the difference is that much, but in this case DeChambeau is putting more emphasis on control than distance.

While I use midsize grips as well, I've heard that DeChambeau uses oversize grips (I could be wrong.) According to him, it cuts down on wrist movement, the theory goes. Trying to eliminate more variables from the swing.

That said, I'm not sure I understand why, I didn't major in physics but economics. Which the latter isn't very helpful for understanding the golf swing.

Personally I've used midsize grips on drivers for years and years and I've found it helps me hit the ball further !!

I too have heard that a larger/thicker grip will affect distance negatively, though I don't really see much of a difference using midsize Golf Pride MCCs. However, concerned that it might make a difference, I have gone back to a regular diameter grip in my driver and just add an extra wrap of tape. (Would hate to give up even a yard, just in case it's true that grip size truly does affect distance output.) Supposedly, a smaller diameter grip can affect swing speed due to a looser grasp on the club allowing for an easier release, equaling a slightly faster speed through the ball. I suppose it is possible, but I would think the swing weight difference having the bigger grip might also contribute to a slower speed.

I thought about the swing weight but (depending on density, which I can't imagine is high enough for this to matter) I would think that any change would be negligible when you're talking about already swinging a club of (insert your weight here) at typical swing speeds. Truthfully, I was thinking that a larger grip might ADD yards if anything (more surface area in contact with the grip, ergo more "traction").

Very interesting point about the single length irons though Joshua. The length argument makes perfect sense but perhaps the commentator just phrased it such that he sounded like he was implying an effect due to the grips... making all of this irrelevant! (Sorry if that's the case folks)

Richard, I would agree with your assessment! During the one round I've gotten in so far, I did average about 5 yards further than my average coming into the round.