Arsenal take on Barcelona at the Camp Nou tonight, knowing they must score to have any chance of progressing to the last four of the UEFA Champions League.
In the first-leg, Arsene Wenger's side produced a dramatic comeback from 2-0 down to give themselves a fighting chance heading into tonight's fixture. Barca forward Zlatan Ibrahimovich gave his side the lead with a delightful lob early in the second half, before doubling the Catalans' advantage with a powerful finish shortly after.
Substitute Theo Walcott pulled one back for the Gunners, before Cesc Fabregas was brought down by Carles Puyol in the box - the Arsenal captain coolly slotting the resulting penalty to level the tie.
While the first match displayed both sides at almost full-strength, tonight's clash will be missing a number of key players from each side after a series of suspensions and injuries hit hard.
Wenger will be without William Gallas, Andrey Arshavin and Cesc Frabregas, all of whom were injured during the first-leg. They will be also be missing Alex Song after he sustained knee and groin injuries during Arsenal's 1-0 win over Wolves on Saturday.
Tomas Rosicky is rated at 50:50, while long-term absentee Robin Van Persie is still not fit enough to play.
The visitors are not without their own selection worries with first-choice central defenders Gerard Pique and Carles Puyol both suspended after picking up yellow cards in the first-leg.
Ibrahimovic is out after damaging his calf during the warm-up before his side's 4-1 win over Athletico Bilbao on Saturday, while Yaya Toure and Jeffren Suarez are both facing a race against time to be fit after picking up injuries during the game.
Influential midfielder Andres Iniesta is still a major doubt after missing the first game with an injury to his left leg.