Portugal are eight points behind leaders Ukraine, but still have two games in hand. They can close the gap further with victory over Lithuania on Tuesday - the same day that Serbia will be looking to respond away in Luxembourg.
Portugal climb up to second place in Group B following their 4-2 victory over Serbia in Belgrade. Cristiano Ronaldo and Bernardo Silva were among the scorers for Fernando Santos' men, while William Carvalho and Goncalo Guedes were also on target. Nikola Milenkovic and Aleksandar Mitrovic replied for Serbia, but could not prevent a first competitive home defeat for nearly four years.