Luxembourg started the World Cup qualifier with a surprising scalp.
Gerson Rodrigues scored the only goal of the match away against Ireland and also started the goal scorer at home against Portugal.
The Dynamo Kiev striker nodded in 1-0 after half an hour and the reigning European champions looked taken out on the bed.
They had time to wake up before the half was over.
Diogo Jota flew supple at the top of the penalty area and nodded powerfully into the 1-1 cross.
Despite the game sometimes hacking apprehensively, the Portuguese then took over the match.
Cristiano Ronaldo fooled the former Norrköping player Lars Krogh Gerson's back line and was able to completely wide wide in 2-1 on volley.
With ten minutes left, the Sporting midfielder nodded in Joao Palhinha 3-1 on a corner.
Haksabanovic without a draw against Norway
This means that Portugal, despite a couple of intimidation hiccups, tops Group A with a better goal difference than Serbia.
An own goal saved three Portuguese points against Azerbaijan.
In match two, they were sniffed at the victory when the referees missed a seemingly clear 3-2 goal.
Elsewhere, Norway had recovered from the 0-3 loss to Turkey and beat Montenegro where Sead Haksabanovic, IFK Norrköping started and Dino Islamovic, formerly Östersund, 1-0.
Turkey, in turn, won only 3-3 against Latvia in Istanbul.
Sweden's European Championship opponent Slovakia looked strong when they beat Russia 2-1 without injuring IFK Gothenburg new acquisition Marek Hamsik.
Double expulsions in Wales
In Group E, Belgium won 8-0 against Belarus, while the Czech Republic and Wales offered more martial arts than football in 82 minutes.
Patrik Shick hit Connor Roberts in the penalty area and was shown off early in the second half.
The same Roberts elbowed to a second yellow with a quarter left.
A few minutes later, Gareth Bale's post found Daniel James who scored the only goal of the match.