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Luca Bruno, Associated Press
AC Milan forward Zlatan Ibrahimovic, of Sweden, scores from a penalty kick during a Serie A soccer match between AC Milan and Siena at the San Siro stadium in Milan, Italy, Saturday, Dec.17, 2011.

MILAN — AC Milan moved provisionally top of the Serie A standings with a 2-0 win over Siena on Saturday, which leaves the Tuscan side even more in danger at the foot of the table.

Antonio Nocerino scored his sixth of the season to give Milan the lead and Zlatan Ibrahimovic doubled the tally from the spot.

Milan moved a point clear of Udinese and Juventus, which play on Sunday. Siena remains two points above the relegation zone after five defeats in six games.

In a dramatic finish in Florence, two late goals from German Denis and Andrea Masiello appeared to have given Atalanta victory over Fiorentina, but Stevan Jovetic leveled to secure a 2-2 draw.

Elsewhere, Chievo got back to winning ways as goals from Cyril Thereau and Gennaro Sardo secured a 2-0 victory over Cagliari.