Now, before anyone jumps to conclusions about the picture that opens the slideshow, you can relax, because Mariano Rivera isn't going anywhere.
However, there have been plenty of rumors that have centered around relievers, most of which any team would love to have in their own bullpen for the stretch run.
There are some better than others, some that will cost more in return, and even more that can be had for not much at all.
However, whether they cost major league talent, top prospects, or your run of the mill "player to be named later," we'll see plenty of relievers moved at the deadline make a huge impact on their new teams as they make a run to the division titles and into the playoffs.
The following list is the 10 relievers who would make the biggest impact to any team that wants to make it deep into the playoffs.