The start of a new season does not mean that MLB managers gets a fresh slate. Many of them have to worry about their job security based on their team's performance from the previous years.
Other managers know that they have job security unless their team's season goes horribly awry.
The managers have been ranked entering the 2013 season on the following criteria: 2012 performance, chances of living up to 2013 expectations and a hot seat/pressure ranking. For the pressure ranking: the more pressure, the lower the number. Managers that joined new teams were evaluated based on their last job in the majors. Skippers also get two bonus points for each postseason appearance in the past three years.
The managers with the lowest scores are at the highest risk of losing their job at some point in 2013 or once the season ends.