Sweden kept their hopes of promotion to the top tier of the Nations League alive with a 1-0 victory at Turkey, who were relegated to League C as a result.
Andreas Granqvist's second-half penalty was enough to move Sweden up to four points in Group B2, and they must now beat Russia - who top the group with seven points - on Tuesday to reach League A.
Manchester United defender Victor Lindelof was substituted off at half-time, with Sweden head coach Janne Andersson confirming the centre-back "did not feel well".
Fulham striker Aleksandar Mitrovic had an eventful afternoon as Serbia closed in on promotion to League B with a 2-1 home win over neighbours Montenegro.
First-half goals from Adem Ljajic and Aleksandar Mitrovic proved crucial, and though the latter chipped a Panenka penalty over the bar after Nemanja Matic went down under no contact, Serbia held on despite Stefan Mugosa pulling one back in the 70th minute.
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Serbia top Group C4 with 11 points from five games, but Romania remained two points behind after breezing past Lithuania 3-0.
Elsewhere, victories for Kosovo and Azerbaijan helped set up a winner-takes-all clash when the pair face one another on Tuesday in Group D3.
Kosovo's 5-0 victory at Malta leaves them on 11 points from five games, two points clear of Azerbaijan, who beat Faroe Islands 2-0.