Silvestre Varela netted in the final minute of stoppage time as Portugal secured a 2-2 draw with the United States to earn one crucial point.
On a low-key night of qualifying in the European zone, Belgium and Bosnia-Herzegovina both won to consolidate top spots in their groups but Group H leader Montenegro lost 4-0 at home to Ukraine to put second-place England back in control of its own destiny.
Portugal striker Helder Postiga will miss their Euro 2012 semi-final against France or Spain after pulling a thigh muscle in Thursday's 1-0 win over Czech Republic, the country's football federation confirmed Friday.
Cometh the Euro ...cometh the man could well be Portuguese striker Helder Postiga's sporting epitaph.
Substitute Silvestre Varela scored three minutes from the end Wednesday to give Portugal a 3-2 win over Denmark and revive his team's hopes of reaching the European Championship quarterfinals.
The pressure is growing on Portugal given their opening Euro 2012 loss to Germany, coach Paulo Bento admitted Tuesday on the eve of his side's Group B encounter with Denmark in Lviv.
A second-half goal from Helder Postiga gave Portugal a 1-0 win over Norway in a 2012 European Championship qualifier and tied them together at the top of Group H on Saturday.