Aaron Ramsey continued his fine goalscoring form by netting the winner in a crucial 2-1 victory for Arsenal over Marseille.
With tough ties against Borussia Dortmund and Napoli in the offing, winning against the Ligue 1 outfit was crucial for Arsene Wenger's men.
However, after a poor first half, in which neither side threatened to score, a draw looked the most likely result.
Marseille gained the upper hand early in the second half and came close to getting a goal after a botched clearance from Per Mertesacker looped over Wojiech Szczesny and had to be cleared off the line from Keiran Gibbs.
It was Theo Walcott who eventually broke the deadlock in the 65th minute. Taking advantage of a similarly bad clearance from Guy Moreal, Walcott fired home an emphatic volley.
Aaron Ramsey all but wrapped up the points five minutes from time with the Welshman firing home a deflected shot from just outside the area. That is now six goals in six games for Ramsey.
A perfect night for Ramsey was dampened slightly after he gave away an injury-time penalty, which was converted by Jordan Ayew but there was barely enough time to kick-off again and Arsenal took home the three points.
The win was Arsenal's tenth successive away victory in all competitions - a new club record.