Lionel Messi scored his eighth Champions League hat-trick as Barcelona thrashed Dutch champions PSV Eindhoven in their opening group game.

Barca's captain curled home a stunning free-kick to open the scoring before Luis Suarez's clever 20-yard lob hit the crossbar.

The impressive Ousmane Dembele spun to lose two defenders and blasted home Barcelona's second from outside the box.

Messi half-volleyed Ivan Rakitic's aerial pass home for their third before Barcelona defender Samuel Umtiti was sent off for two yellow cards.

The 10 men got a fourth goal when Suarez picked out Messi, who guided the ball past goalkeeper Jeroen Zoet from 15 yards.

The other game in Group B saw Inter Milan come from behind to beat Tottenham 2-1 at the San Siro.