Some see it as dark arts, but the underarm serve which Michael Chang originated over 30 years ago is now part of the modern game with Daniil Medvedev the latest player to use the tactic at the ATP Finals.
Some see it as dark arts, but the underarm serve which Michael Chang originated over 30 years ago is now part of the modern game with Daniil Medvedev the latest player to use the tactic at the ATP Finals.
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