There we go. Barcelona have scored, and while the visiting team might not deserve a lead Bayer Leverkusen definitely do deserve to be behind for an absolutely awful display. It's a first UEFA Champions League goal for former Udinese man Alexis Sanchez, who's set free by an absolutely superb pass by Lionel Messi, who looped a ball over the top for Sanchez to sprint onto.
The Chilean, accompanied by Cesc Fabregas in a two-on-zero, sauntered into the box and while it looked like a sprinting Michal Kadlec might be able to get a last-ditch challenge in, Sanchez was having none of that. His finish was superb, going straight through a helpless Bernd Leno's legs and into a postage stamp at the far corner. So that's 1-0 Barcelona and Bayer Leverkusen have failed to make it to halftime with the match scoreless. If the hosts keep playing like this, the tie is over.