 Complete the following phrase:  Chivu was a regular at left back during the 200910 season, as Walter Samuel and Lúcio became the preferred centre back pairing. On 6 January against Chievo, Chivu was stretchered off early in the second half after colliding heads with Chievo striker Sergio Pellissier. He was in two hours of surgery for a skull fracture and later cleared of any danger. Although it was initially thought he might be out for the rest of the season, he returned to Serie A on 24 March. After this, he needed to wear a headguard in matches. A month later, Chivu scored his first goal for Inter in a game against Atalanta, a terrific 30-yard strike. On 22 May 2010, he was in Inters starting line-up in the 