Cristiano Ronaldo scored in the closing seconds to give Portugal a 1-0 win over Denmark in a Euro 2016 qualifier in Group I on Tuesday.
Portugal, who were recovering from a shock 1-0 home loss to Albania last month, made the better start in Copenhagen. But the home team had the best chance of the first half when a curling shot by Denmark striker Michael Krohn-Dehli hit the far post.
Ronaldo headed home in the 95th minute following a shot from Ricardo Quaresma, crushing the Danes' hopes of a draw.
Also in Group I, the match in Belgrade between Serbia and Albania was abandoned after pitch skirmishes involving players and fans over an Albanian flag that was flown above the stadium by a drone.
In Group E, Switzerland had little problem in San Marino, winning 4-0 thanks to two goals from Haris Seferovic, while Blerim Dzemaili and Xherdan Shaqiri also scored.
In Group D, John O'Shea scored in the fourth minute of stoppage time to give the Republic of Ireland a 1-1 draw with Germany as the World Cup holders suffered another setback in their campaign.
Toni Kroos scored in the second half to put Germany ahead as they sought to bounce back from a loss to Poland.
Kroos hammered home a low drive in the 71st minute with what was then Germany's 17th shot. Ireland only had managed one until then, but O'Shea's late strike stunned Joachim Low's team.
In Warsaw, Poland drew 2-2 with Scotland to remain top of Group D on goal difference over Ireland.
Poland and Ireland have seven points from three matches, while Germany and Scotland have four each.
In the other Group D match, Georgia won 3-0 at Gibraltar.
Northern Ireland continued their surprise run in qualifying by beating Greece 2-0 for their third straight win in Group F.
Jamie Ward fired in a corner kick taken by Oliver Norwood in the ninth minute, with the ball crossing the line after a slight deflection off Greece defender Loukas Vyntra.
Kyle Lafferty scored the second after a solo run six minutes into the second half, giving him goals in all three of his country's group matches.
The injury-plagued Greeks had their best chance in the first half with Nikos Karelis, who misplaced his lob for the 2004 European champions.
In Tuesday's other Group F games, Hungary won 1-0 in the Faroe Islands, while Romania beat Finland 2-0 in Helsinki.
Adam Szalai netted Hungary's only goal in the 21st minute, the Hoffenheim striker left unmarked at the far post to turn home Roland Juhasz's cross.
Romania remained unbeaten in their qualifying campaign and moved up to second in Group F as Bogdan Stancu's second-half goals handed 10-man Finland their first defeat.