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A right calf injury has slowed Italian midfielder Daniele De Rossi, shown here, who is questionable for Monday's World Cup match against Paraguay. Teammate Andrea Pirlo could miss the entire group phase with a left calf injury. ((Giuseppe Bellini/Getty Images) )

Italy has another key injury concern just three days before its World Cup opener: Daniele De Rossi.

De Rossi sat out a training match against the Gauteng all stars on Friday in Irene, South Africa with a right calf problem. Team physician Enrico Castellacci said the midfielder has a chance of being ready for Monday's game against Paraguay.

Another key midfielder, Andrea Pirlo, could miss the entire group phase with a left calf injury.

De Rossi and Pirlo were the only members of Italy's team who did not play against Gauteng.

Two other midfielders who had minor injuries, Claudio Marchisio and Mauro Camoranesi, both played without any problems — Marchisio as a starter and Camoranesi as a second-half substitute.