Real Madrid suffers defeat in CL opener

Real, which was down by three goals at the break, reduced the deficit to one around the hour mark, but could not complete a comeback. Fellow La Liga club Atletico Madrid was thrashed 0-4 by defending champion Bayern Munich away from home.

Premier League holder Liverpool churned out a 1-0 win at Ajax, while host Manchester City survived an early scare to defeat Porto 3-1. Inter Milan played out a 2-2 draw with Borussia Monchengladbach, with Atalanta getting all three points in a 4-0 demolition of Midtjylland.

Elsewhere, Olympiacos recorded a 1-0 victory over Marseille, while RB Salzburg and Lokomotiv Moscow shared the spoils in a 2-2 draw.