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Europe's finest unbeaten in Olympic openers

Neymar drew a blank but Seung-Woo Ryu scored a hat-trick on the opening day of the men's Olympic tournament as Portugal won and Denmark, Sweden and Germany all drew.

Portugal beat Argentina 2-0
Portugal beat Argentina 2-0 ©Getty Images

Group A
Iraq 0-0 Denmark
Brazil 0-0 South Africa

  • Both games in Brasilia finished goalless despite the hosts fielding Neymar and Manchester City signing Gabriel Jesus.

Group B
Sweden 2-2 Colombia
Nigeria 5-4 Japan

  • Teófilo Gutiérrez helped deny Sweden victory while Roma's Sadiq Umar opened the scoring for Nigeria in an extraordinary match where Portuguese side Feirense's Oghenekaro Etebo got four goals.

Group C
Mexico 2-2 Germany
Fiji 0-8 South Korea

  • Equalisers from Serge Gnabry and Matthias Ginter ensured Germany a point while Bayer Leverkusen's Seung-Woo Ryu hit a hat-trick and fellow UEFA Champions League contenders Son Heung-Min and Hyun Jun Suk were also on target for South Korea.

Group D
Portugal 2-0 Argentina
Honduras 3-2 Algeria

  • Ángel Correa was among the Argentina players done down by Portugal. This group, like the four others, continues on Sunday.