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Author: WikiMatrix
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English[en]
Tournaments that are played under the ITF Rules of Tennis must use balls that are approved by the International Tennis Federation (ITF) and be named on the official ITF list of approved tennis balls.
Finnish[fi]
Pallot, joilla pelataan tenniksen sääntöjen mukaisia turnauksia, täytyy olla nimettyjä virallisella ITF list of approved balls -luettelossa, jonka ITF julkaisee.