Liverpool and Chelsea still have work to do if they are to qualify for the knockout stages of the UEFA Champions League.
Defending champions Liverpool came from behind to earn a 1-1 draw with Italian side Napoli at Anfield and Chelsea squandered a 2-1 lead to draw 2-2 at Valencia.
In the other Group H match, Ajax beat Lille 2-0.
Inter Milan defeated Slavia Prague 3-1 in Group F to stay in contention for a place in the last-16, while Barcelona have qualified from the pool after beating Borussia Dortmund 3-1.
In other games, Zenit registered a 2-0 win at home over Lyon, Salzburg crushed Genk 4-1 and Benfica drew 2-2 with Leipzig.
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