Quote:
Originally Posted by BIG UMP
I don't have my books with me but there is a play explaining the switch from leather to composite in the case book.
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Case Book 1-3-2
A change from leather to rubber or vice versa or from longitudinal striping or conventional striping can only be made for a free kick or to start a series.
If weather conditions warrant, a switch can be made by the officials from leather to leather or rubber to rubber within a series.