Lionel Messi bagged a hat-trick as Barcelona launched their UEFA Champions League soccer campaign in style with a 7-0 thrashing of Celtic. Two goals from Lionel Messi either side of Moussa Dembele’s missed penalty for Celtic gave Barcelona a comfortable half-time lead. And there was no let-up for the scottIsh champions after the break as Neymar, Messi, Andres Iniesta and a Suarez double completed the rout. This is the sixth hat-trick for Messi in UEFA Champions League and became the first Argentinean to score 40 hat-tricks in career so far. Meanwhile in another match, Bayern Munich crushed champions league newcomers Rostov 5-nil to kick off their group d campaign and set a competition record with their 13th consecutive home victory. Group a match between arsenal and Paris saint German ended in a 1-all draw