Walter Samuel has apparently picked up a hamstring injury in the 21st minute.
World Cup 2010, Argentina Vs. South Korea: Walter Samuel Leaves With Hamstring Injury
The Argentine center half had to take treatment off the pitch for an injury to his left leg. Moments earlier, while on the ball, Samuel had to give the ball to left back Gabriel Heinze though he was not being pressured.
Samuel limped back on the pitch and played one more minute before being subbed-off for Nicolas Burdisso in the 24th minute.
Argentine maintains a 1-0 lead.
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