A rampant final quarter from Barcelona secured the Spanish side a comfortable 87-63 victory against Euroleague newcomers Zenit St Petersburg on Friday.It was a scoreline that flattered the two-time champions, as they were pushed all the way until the fourth quarter when they ran riot with 28 points to Zenit's seven. Kyle Curic was pivotal to Barca's success with 24 points. Nikola Mirotic added 17, while Evgeny Voronov led Zenit with 10.