Miqar_Baqfhied,The form doesn't tell you how well are you performing, it's more a tired indicator.
Form is the physical part of your player, and with the stats you can decide if you can run more or less & hit accelerations.
For example, Nadal, if Rafa loses, he would have 100 in form anyway almost always

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At least that is what i've heard about "form"

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