Napoli took a big step towards beating Lazio to the final Champions League spot by winning their match in Rome. Jose Callejon tapped home Marek Hamsik's cross at the far post to give the Neapolitan side the lead. Lorenzo Insigne poked home Allan's ball to double the lead and added an injury-time third from 16 yards. Napoli are seven points above fourth-placed Lazio, who clinched their place in the Coppa Italia final this week with a two-legged victory over Roma.