Arsenal gained a vital advantage in the semi-final of the UEFA Europa League after a 3-1 first-leg victory over Valencia on Thursday.
Valencia took a shock lead as Mouctar Diakhaby headed the opener after only 11 minutes, and the Arsenal defence was floundering from the first exchanges.
However, the Gunners went on the front foot, and two goals in seven minutes from Alexandre Lacazette gave Unai Emery's team the lead before half-time.
The Spaniards continued to cause the home side issues in the second half, but it was left to Pierre-Emerick Aubameyang to volley home in the final minute to complete victory.