Pietersen's influence already rubbing off on Brook, England

London, Sep 16 (UNI) Kevin Pietersen's influence on England's white-ball setup is already starting to show, if their commanding victory over Sri Lanka in Southampton on Tuesday is anything to go by. Pietersen only joined up with England's squad earlier this month in a specialist mentor role until the 2027 edition of the ICC Men's Cricket World Cup in South Africa, Zimbabwe and Namibia and the ICC Hall of Famer is already making an impact on the playing group and captain Harry Brook. Brook scored an unbeaten 114 against Sri Lanka in the opening match of their white-ball series in…