Arsenal beat PSG in Champions League duel, Dortmund hit Celtic for seven

Arsenal beat Paris Saint-Germain 2-0 in their heavyweight Champions League duel on Tuesday, while last season's beaten finalists Borussia Dortmund gave Celtic a brutal reality check with an emphatic 7-1 win in Germany.- Adeyemi hat-trick - Dortmund are currently on top of the 36-team league after they followed a 3-0 win at Club Brugge in their first game by trouncing Scottish champions Celtic in Germany.