Former club captain and fan favourite Antonio Conte was officially appointed as the new manager on 31 May 2011, taking over the post previously left vacant following the sacking of Luigi Delneri. It was Conte's first appointment at a major Serie A club; he previously managed Siena, Arezzo, Atalanta, and Bari respectively, winning two Serie A promotions in the process (with Bari and Siena). His arrival coincided with the acquisitions of Andrea Pirlo and Arturo Vidal, both top-class midfielders. The 2011–12 season also marked the opening of a new stadium, named Juventus Stadium. It was officially opened on 11 September, in a match against Parma that ended 4–1. First half of league saw Juventus gain several key-wins such as over Milan and Inter, both beaten in the month of October.