The coach who helped guide Jannik Sinner to five Grand Slam titles and the world number one spot is to leave the player's camp at the end of the year.
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The coach who helped guide Jannik Sinner to five Grand Slam titles and the world number one spot is to leave the player's camp at the end of the year.

The coach who helped guide Jannik Sinner to five Grand Slam titles and the world number one spot is to leave the player's camp at the end of the year.