FC Barcelona played a strong second half, but still had to settle for a 1-1 draw with AC Milan on Tuesday in the third round of Champions League group play.

Both goals came in the first half.

Robinho, back from injury, put the home side ahead in the 9th minute, inspiring his AC Milan mates and the roughly 75,000 fans in the San Siro.

Barça was ineffective on offense for the opening 15 minutes and didn't mount a scoring threat until the 19th minute.

Four minutes later, however, a takeaway by Busquets and a good ball from Iniesta put Lionel Messi in position to equalize for the visitors.

The Barça goal deflated the Italian side, which managed only one other scoring chance before halftime.

It was all Barcelona after that, but the high-powered Catalan club could not get the winning goal.

The outcome leaves Barça atop Group H with 7 points, followed by AC Milan with 5. Celtic, which beat Ajax 2-1 on Tuesday, is in third with 3 points, while the Dutch club has a single point.

In Group E, Steaua Bucarest and Basel battled to a 1-all tie as Chelsea chalked up a 3-0 road win over Schalke 04. The English and German sides are tied for first in the group with 6 points each, ahead of Basel, with 4 points, and Steaua, with 1.

Three clubs, Arsenal, Borussia Dortmund and Napoli, are tied for the lead in Group F at 6 points after Tuesday's action.

The Gunners lost 2-1 at home to Dortmund and Napoli triumphed 2-1 over Olympique Marseille, which remains without a point.

Atletico Madrid got its third win in three outings, beating Austria Wien 3-0. The Spanish club leads Group G by 5 points over Zenit St. Petersburg, who blanked Porto 1-0 for their first victory of the competition. EFE