Obviously this is for a right handed golfer and it would be the right elbow for a left handed golfer.
This is neither profound, nor groundbreaking, but I am surprised and appalled at how many people don’t know the significance of the straight left elbow.
There are four basic categories for the left elbow during the backswing and downswing.
4. Elbow Macaroni
Most people will tell you tat a golf swing where you are in category 2 as long as possible is ideal. Not going to get an argument from me.
What I am here to say is that category #1 is the worst. In an effort to have a straight left elbow, many golfers, even low handicappers, will lock their left elbow and/or have too much tension in it, in order to keep it straight. That is the road to injury.
The “straightness” of the left elbow is about moderation and avoiding too much of a good thing. A concept not too common or popular in modern golf instruction.