sentences:  A brave, rugged, and committed defender, his main traits were his leadership, aerial prowess, and his ability to read the game and time his tackles.While initially he was not known to be the most gifted player on the ball from a technical standpoint, he developed this aspect of his game under Wenger, and he later excelled as a ball–playing centre-back, in which he became known for his ability to carry the ball out from the back, as well as his penchant for undertaking individual runs.However, he was also known for his lack of pace.