Real Madrid and Manchester City became the first teams to reach the second round of the Champions league on Tuesday with victories over Paris Saint-Germain and Sevilla.
Madrid had substitute Nacho Fernandez to thank for a hard-fought 1-0 win over previously unbeaten PSG which broke Barcelona's group-stage record of 18 games unbeaten.
City won 3-1 to move top of Group D on nine points, one ahead of Juventus, who threw Moenchengladbach with draw.
Here's a closer look at the games in each group:
GROUP A
Nacho scored two minutes after coming on for Real Madrid against PSG, capitalizing on a mistake from goalkeeper Kevin Trapp to score from a tight angle after Toni Kroos' initial effort was deflected way off target. Trapp came out from his goal but was caught flat-footed when Nacho dinked the ball inside the far post.
The win gave Madrid 10 points from four matches, while PSG, which had more efforts and possession, remained on seven points.
GROUP B
Wayne Rooney ended Manchester United's 404-minute goal drought, clinching a 1-0 win over CSKA Moscow.
The United captain squandered a golden chance in front of goal at Old Trafford before meeting Jesse lingard's cross with a header in 79th minute.
GROUP C
Central defender luisao's 67th-minute winner for Benfica over Galatasaray put the Portuguese club two points clear of Atletico with two games to play. Galatasaray is third with four points.
Raul Jimenez chipped the ball into the visitors' penalty area for luisao to poke it into the net from close range. The Brazilian's goal put Benfica back into the lead after lukas Podolski leveled the score in the 58th, canceling out Jonas' 52nd-minute opener.
GROUP D
Raheem Sterling scored his first Champions league goal to help Manchester City seal its place in the round of 16 with a dominant 3-1 win at Sevilla. Sevilla's Benoit Tremoulinas scored in the 25th, only for former Sevilla forward Jesus Navas to set up Bony for City's third.
Stephan lichtsteiner scored to give 10-man Juventus a 1-1 draw at Gladbach.
Hernanes was sent off for reckless two-footed lunge on Alvaro Dominguez in second half and needed Gianluigi Buffon to keep Juventus in hunt.