I have a quick screen capture for you, if you're interested. This is is of the Wins Above Replacement leader board among AL relievers at FanGraphs. Specifically, it's the top 16 most valuable relievers in the league in 2010.
Click for a larger view.
This is prior to tonight's game. I just wanted to highlight, if you didn't already know, how awesome the top four in the Rangers' pen have been this year.
Also, this is how much more wins they've added over a scrub (like, say, Dustin Nippert), given average luck, defense and ballparks. This does not include how much leverage on the outcome of the games the innings they pitch have. Just a quick glimpse of talent is all.