(CNN) -- AC Milan are all but through to the quarterfinals of the Champions League after thrashing Arsenal 4-0 at the San Siro on Wednesday. Brazilian striker Robinho scored twice as the Serie A champions dominated the first leg of the last-16 tie with the north London club. Kevin Prince Boateng put Milan ahead in the 15th minute with a sumptuous half-volley after chesting down a chipped pass from Alberto Nocerino. The Ghana midfielder's strike flew in off the underside of the bar leaving Wojciech Szczesny with no chance. Robinho doubled the lead seven minutes before the break heading home a cut-back from Zlatan Ibrahimovic.
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AC Milan demolish Arsenal 4-0 at the San Siro to almost guarantee place in last eight
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Zenit St Petersburg beat Benfica 3-2 in first leg of last 16 encounter
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Juventus drop points on the road in Serie A to stay in second behind AC Milan
@placeholder's 10th draw of the league season (and their sixth on the road) means that AC Milan still head the league table but only by one point.