Their projected lineup has four new starters ; they lengthened their rotation and overhauled their bullpen .
The Mariners moved more than 50 players on or off of their 40 - man roster since the end of last season .
Mariners ' projected lineup has four new starters ; they lengthened their rotation and overhauled their bullpen .
The Mariners moved more than 50 players on or off of their 40 - man roster since the end of last season .