Lombaerts finally made his return to Zenit on 19 July 2009, coming on in the 71st minute for Aleksei Ionov against Terek Grozny. Even though Zenit were defeated 3-2, Lombaerts described the happiness of taking the pitch again as similar to "a small child's joy when walking into a shop full of sweets." He then quickly became a fixture in defense for caretaker Anatoliy Davydov, helping Zenit win six consecutive matches to get back into the title hunt. On 29 November 2009, Lombaerts scored the game-winning goal against rival Spartak Moscow to put Zenit into the 2010-11 UEFA Champions League as third-place team in Russia.