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Rio 2016: 10-Man Argentina Down Algeria, Gnabry Rescues Germany

Jonathan Calleri (2nd R) of Argentina celebrates scoring the 2nd team goal with his team mate Angel Correa during the Men's Group D first round match between Argentina and Algeria. (Getty Images)

Jonathan Calleri (2nd R) of Argentina celebrates scoring the 2nd team goal with his team mate Angel Correa during the Men's Group D first round match between Argentina and Algeria. (Getty Images)

Argentina's preparations for the Olympics were hugely undermined by a corruption crisis engulfing the country's football federation.

Rio de Janeiro: Atletico Madrid's Angel Correa scored and set up Jonathan Calleri's winner as 10-man Argentina avoided adding an early Olympic Games exit to Copa America heartbreak with a 2-1 win over Algeria in Rio.

World champions Germany also dug themselves out of trouble as a stoppage-time equaliser from Arsenal winger Serge Gnabry salvaged a thrilling 3-3 draw against South Korea in Salvador.

Hosts Brazil hope to kickstart their campaign for a maiden football Olympic gold later on Sunday against Iraq in Brasilia after stumbling to a 0-0 draw with South Africa in their opener.

Argentina's preparations for the Olympics were hugely undermined by a corruption crisis engulfing the country's football federation.

Coach Julio Olarticoechea was put in charge for the Games just weeks before their opening 2-0 defeat to Portugal following Gerardo Martino's resignation after a second Copa America final defeat to Chile in as many years.

Olarticoechea's options were also slashed by a number of high-profile pullouts and European clubs not releasing their players so close to the start of the season.

However, it was Calleri, one of those called in at the last minute to replace Correa's former Atletico team-mate Luciano Vietto, who bundled home the winner 20 minutes from time.

Argentina captain Victor Cuesta put his side in real trouble just before half-time when picked up an unnecessary second yellow card.

Yet, Correa -- who starred as Argentina qualified for the Games by winning last year's South American under-20 championships -- drilled home the opener from Calleri's flick-on just two minutes into the second period.

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