There have been a lot of debates about Greg Maddux's arm action and whether he shows the ball to CF or to 3B. I have extracted a number of frames from one of bbscout's clips of Maddux (in which he's throwing a 93 MPH fastball) and posted them to my web site. Maddux's mechanics are generally similar to this today, especially when it comes to his arm action.
Below, I give my interpretation of what I see in those clips.
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Frame 101. High Cocked Position. Notice how low Greg Maddux's PAS elbow is. Notice the W shape rather than the M shape. This frame is one reason why I question the wisdom of the advice to get the elbow up.
Frame 102. Notice Maddux's excellent timing. How his shoulders don't start to rotate until his PAS forearm is vertical.
Frame 106. Release Point. Notice how far (c. 3 feet) Greg Maddux's PAS foot has come off the rubber. This helps him release the ball closer to the plate and helps his hips (and thus his arm) to smoothly decelerate. Also, notice how Greg Maddux's knee always stays flexed rather than locking.
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