[Arizona Sports] Projecting the Diamondbacks’ Opening Day active roster - The Arizona Diamondbacks have to get their Opening Day roster down to 30. On Monday, they announced the pool of 60 players that they’ll bring into spring — er, summer — camp this week. But what will that active roster look like? New rules, such as the placement of a runner on second base in extra innings and the use of a designated hitter in both leagues, could change the dynamics of roster construction for general manager Mike Hazen. Plus, unforeseen circumstances throughout the season could prompt Hazen to change course and make additions and subtractions from the player pool.