On October 3, 2005, the Tigers released Trammell after three seasons in which the organization failed to post a winning record. Trammell was replaced by Jim Leyland on October 4, 2005. Leyland led Detroit to a 24-game improvement in the regular season, an AL pennant and a World Series appearance in 2006. While there was some media criticism regarding Trammell's managerial strategies and "nice" demeanor, others contend that he was a rookie manager put in charge of a team that was severely lacking in talent, and believe his managerial stint played an integral role in re-instilling professionalism and pride throughout the Detroit organization. Leyland himself attributed a degree of the success that the Tigers saw in the 2006 postseason to Trammell's efforts in the three years prior.