* Shirokov scores winner with disputed penalty * Akinfeyev keeps eighth clean sheet in a row (Adds details, quotes) MOSCOW, Oct 16 (Reuters) - Roman Shirokov struck a late penalty as Russia laboured to a 1-0 win over Group F outsiders Azerbaijan on Tuesday to maintain their 100 percent World Cup qualifying record under coach Fabio Capello. The Russians thoroughly dominated the visitors but failed to hit the target until Shirokov calmly converted the 84th-minute spot-kick following a foul on substitute Vladimir Bystrov. ... More...