Ronaldo scored twice and set up another goal to help AC Milan beat Siena 4-3 in the Serie A on Saturday. The Brazil striker opened with a header in the 15th minute and tapped in his second goal nine minutes from the end. Ronaldo also passed the ball through Siena's defense for Brazil striker Ricardo Oliveira to score in the 28th.
Massimo Ambrosini scored Milan's fourth goal in the 90th to win the match, a minute after Massimo Maccarone struck a late equalizer for Siena.
Simone Vergassola and Maccarone also leveled the scores in the 19th and 30th respectively.
Also, city rival Inter Milan beat Cagliari 1-0 - the Nerazzurri's 16th-straight Serie A victory - to extend its lead atop the division to 14 points, after Empoli beat second-place AS Roma 1-0. Inter has 63 points, followed by Roma with 49 and Palermo with 42. Empoli is fourth with 35 points - two more than Milan. Palermo plays Chievo Verona on Sunday.
Juventus thrashed Crotone 5-0 in the Serie B.