Messi at double, while Bayern show a ruthless edge
Lionel Messi scored twice as Barcelona proved they are still a major European force despite the loss of Neymar with a 3-0 Champions League mauling of last season's beaten finalists Juventus.
Messi, fresh from his derby hat-trick against Espanyol at the weekend, scored either side of an Ivan Rakitic goal as Barca put the Italian champions to the sword at the Nou Camp.
The victory comes on the back of a 100 per cent start to Barca's La Liga campaign - during which they have yet to concede a goal - and offers an emphatic response to anyone doubting their trophy credentials following the £200m sale of Neymar to PSG.
Bayern Munich, who are in Group B along with PSG, were 3-0 winners over 10-man Anderlecht at the Allianz Arena.
Visiting midfielder Sven Kums was sent off after conceding the 11th-minute penalty which Robert Lewandowski netted to put Bayern ahead, and then second-half goals from Thiago and Joshua Kimmich completed a comfortable win.
In Group A, CSKA Moscow were 2-1 victors over Benfica in Portugal. Haris Seferovic put the hosts ahead but Vitinho's spot-kick drew CSKA level before substitute Timur Zhamaletdinov netted a 71st-minute winner.
Sporting Lisbon held off a late fightback to beat Olympiakos 3-2 in Greece. First-half goals from Seydou Doumbia, Gelson Martins and Bruno Fernandes put Sporting in control and Felipe Pardo's brace at the end was not enough to save Olympiakos.
Roma and Atletico Madrid played out a goalless draw in Group C.