WWE Spoilers: John Cena Injured at Extreme RulesBy Cassidy| April 30, 2012 Wrestling News After his Extreme Rules Match against Brock Lesnar at last night’s Extreme Rules event, John Cena has apparently injured his left arm as WWE.com reports that the ten-time former WWE Champion may have suffered “torn muscles, possibly a torn rotator cuff or a biceps muscle”, according to WWE physician, Dr. Chris Amann. Dr. Amann also mentions that Cena will be going in for additional testing to confirm the damage done. John Cena did elude to taking some time off from the WWE after the match last night, but WWE.com mentions that he is still scheduled for tonight’s RAW in Dayton.