Originally Posted by Datacipher
What really made Berger's serve ugly looking was that he let the racquet dangle loosely behind him as he waited for the rest of his toss/swing. He didn't bring his racquet up and hold it down, or even up, but just let it fall back. (THIS isn't a bad thing, in my opinion, but it was ugly). His first serve was a decent shot, good pace, he wasn't a big guy, well under 6 foot, so it wasn't a consistent weapon, but he could get a few aces. His second serve was adequate but rather predictable.
I think Detacipher is on to sometihing when he mentions Berger used to "let the racquet dangle loosely behind him as he waited for the rest of this toss/swing". Being loose is a problem most of us have a problem with. This Berger type set up is a good to get a feel for how loose the arm needs to be in order for the racquet head to be whipped into the ball. Chela used this type of motion at one time also.
If you set up with a loose arm in the Berger type serve and relax the arm and turn the shoulders to the ball, most of us would be more likely to achieve the proper pro style racquet drop.