Tuchel explains Kepa substitution and updates on Ziyech

Tuchel explains Kepa substitution and updates on Ziyech.

Kepa Arrizabalaga was the hero for Chelsea in the Super Cup, saving two penalties in the successful shoot-out having come on right at the end of extra-time, and Thomas Tuchel explained why he was introduced in place of Edouard Mendy.

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