One of the most exciting things about baseball is that players such as Bryce Harper and Mike Trout can start the season off the 25-man roster, yet still provide huge sparks to their teams.
When Trout made his season debut on April 28th, the Angels were 7-14 and nine games out of first place. Today, they sit four games back with a record of 36-31 and Trout is hitting .324 with 16 steals and 35 runs scored. Bryce Harper, at only 19 years old, has become one of the biggest draws in all of baseball by hitting .333 with a .591 slugging percentage in June.
As the season rolls into the second half, there will be more top prospects such as Wil Myers of the Royals and Trevor Bauer of the D-Backs who have similar impacts.
In addition to the young guns, there are countless MLB stars that will return from the DL and change the playoff fortunes for not only their own organizations, but their rivals as well. For these veterans I have calculated their potential value added using their average WAR from the past few seasons combined with their projected games played in 2012.
Without further ado, here are 10 players not currently on 25-man rosters that will make a huge difference in the second half.