The second thing that all high-level tennis players do when hitting a forehand is to take the racket all the way back using both a continued shoulder turn and their hitting arm. At the same time, they extend their non-hitting arm out across their body about waist-high and in line with the baseline. This helps them stay on balance and judge the oncoming tennis ball.
We use some pictures of Marat Safin hitting a forehand in this video!
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