Basel keeps upsetting some of European soccer’s biggest powers.

Substitute Valentin Stocker scored in the 86th minute, giving the Swiss team a 1-0 win over Bayern Munich on Wednesday night in the first leg of the Champions League’s second round.

In the group stage, Basel tied Manchester United at Old Trafford, then defeated the Red Devils to eliminate the three-time champions,

“We have beaten possibly two of the best teams in the world,” Basel goalkeeper Yann Sommer said.

Marseille also scored late for a 1-0 home win, with Andre Ayew connecting on a header in the third minute of injury time against 2010 champion Inter Milan, which has lost six of its last seven games.

“We can score two goals, no problem,” Inter coach Claudio Ranieri said.

Basel twice hit the frame of the goal before Stocker scored in the 86th minute on a shot through goalkeeper Manuel Neuer’s legs. Sommer made a string of fine saves at noisy St. Jakob Park. (AP)

Europa League

Sergio Aguero opened the scoring just 19 seconds in, and Manchester City eased past defending champion Porto 3-0 Wednesday night for a 6-1 aggregate win that advanced it to the third round of the Europa League.

Edin Dzeko scored in the 76th minute, and David Silva (84th) and David Pizarro (86th) added goals as City advanced to a matchup with Legia Warsaw or Sporting Lisbon in the final 16. (AP)

Scotland

Celtic extended its lead over Glasgow rival Rangers to 20 points in the Scottish Premier League with a 2-0 win over last-place Dunfermline.

Defender Charlie Mulgrew scored his second goal in four days and James Forrest added a late goal to give Celtic its 19th straight win in domestic league and cup competition. (AP)