Having graduated from Quarry Bank High School in 1934, Pettit made a name for himself playing amateur football for Cambridge University, where he was reading History at Fitzwilliam House.
His football career included appearances for Oxford University (when he played against Cambridge University in March 1874), Swifts and Old Wykehamists, but he achieved notability for his exploits with the Wanderers amateur club, who won five of he first seven FA Cup finals.
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