Portugal can qualify for Euro 2024 with three games to spare when they host Slovakia at Porto’s Estadio do Dragao on Friday.
Cristiano Ronaldo’s side will reach the finals in Germany with victory after winning all six of their qualifiers for the tournament so far.
Second-placed Slovakia are five points behind Portugal and three ahead of third-placed Luxembourg, their only defeat coming in the reverse fixture.
Portugal are yet to concede a goal in the group stage and have been beaten in only one of their last 27 home qualifiers. The 2016 Euro champions will also reach the finals with a draw if Luxembourg lose their simultaneous match in Iceland.