By James Agberebi:
Arsenal's chance of qualifying for the second round of the UEFA Champions League received a big boost following their 3-0 win against Dinamo Zagreb.
Mezut Ozil put Arsenal ahead in the 29th minute after heading past the keeper off an Alexis Sanchez cross.
In the 33rd minute, Sanchez made it 2-0 for Arsenal when he lashed on to a Nacho Monreal cut back.
And on 69th minute, Sanchez scored his second, and Arsenal's third, after meeting a Joel Campbell throughball, rounding the keeper before slamming the ball into an empty net.
At the Allianz Arena, Olympiakos, parading Brown Ideye, lost 4-0 to Bayern Munich.
Goals from Douglas Costa, Robert Lewansdowski, Thomas Mueller and Kingsley Coman, sealed the win for Bayern.
Arsenal will take on Olympiakos in Greece in their final group game and must win by two clear goals or a higher scoring one goal win than 3-2 to stand a chance of making it to the round of 16.