During his period of rest after the operation, Keane reflected on the cause of his frequent injuries and suspensions. He decided that the cause of these problems was his reckless challenges and angry outbursts which had increasingly blighted his career. As a result, he became more restrained on the field and tended to avoid the disputes and confrontations with other players. Some observers felt that the "new" Keane had become less influential in midfield as a consequence of the change in his style of play, possibly brought about by decreased mobility after his hip operation. After his return, however, Keane displayed the tenacity of old, leading the team to another league title in May 2003.