Okay. Pretty random piece of information to add if you don't agree with those people. God... you thought my comments were hard to start with? I have to break your's down sentence by sentence just so it is clear what I'm responding to.
The biomechanics that produce topspin in the modern ATP forehand are the point of current analysis. Guys have been hitting topspin forever.
Okay... so just because the OP of
THIS THREAD didn't put "modern" in the title, those aren't the steps that comprise a modern ATP forehand? Well, that is Juan Martin Del Potro, and his forehand most certainly is a modern ATP forehand.
Which points are missed? It's a reference on the modern FH technique because it's a frame by frame breakdown of JMDP's forehand.
I'll get to my explanation on why tlm's stroke isn't modern in a moment. One pretty good reference is the thread I linked earlier. The numerous slow motion videos of Federer are great references too.
You posted this:
Seems that you saw a correlation between stiffness and traditional technique. Clearly JMac doesn't have a modern FH; yet he is less stiff than tlm. tlm's stiffness comes from a misunderstanding of where power is derived from. My point is that a traditional FH allows for more fluidity than he currently has.
There are less moving parts in JMac's FH. That doesn't equate to the same type of stiffness that tlm exhibits.
Not my checkpoints, the checkpoints listed in the thread.
The essence of a modern forehand is relaxation. The central take home message is the let your hand lead the racquet to contact. You have the most tense FH I've ever seen, so it really is a tedious exercise to go down the list of 8 modern FH checkpoints and compare them to your stroke.
The functional points of the modern ATP forehand are utilization of SSC, contact with nearly fully extended elbow (away from body), and drive through the contact window.
You can't get the SSC without significant lag. You have some lag, but not enough for the SSC. SSC is the reason you jump higher if you bend your knees and immediately jump instead of jumping after you pause in a squatted position.
I'd like to see your FH from the side. It is kind of difficult to see your contact point. Your elbow is bent too much. I think the ball could be farther in front of you during contact. It could also be farther away laterally from you during contact.
Your topspin isn't delivered from the racquet gliding or brushing over the top of the ball. Your racquet is skidding up directly behind the ball. You are producing a windshield wiper motion before and after contact. The windshield wiper is utilized by pros during the follow through.
Like I said, I think you are a great player man. This is a lot of criticism, so it seems harsh. Just remember, I'm comparing you to guys who won't have to work a real job and will die millionaries because they play this game.