Qatar go into their World Cup match against Bosnia and Herzegovina knowing that victory is the clearest route to keeping their qualification hopes alive in Group B.
Both teams have one point before the Seattle fixture, making the result crucial in the race for a place in the Round of 32.
Qatar are also chasing their first-ever win at the World Cup finals after drawing with Switzerland and suffering a heavy 6-0 defeat to Canada.
The challenge is made harder by red-card absences from the Canada match, while Qatar's coaching staff have warned of Bosnia's physical and technical strengths, especially in attack.