As a Josh Hader owner I am well aware of just how filthy he is. Last night he finally got the love he deserves on the national scene, by throwing 2.2 innings, striking out 8 and earning the save while allowing zero runs. This year through 18.0 IP, Hader has a cool 39ks, good for an average of 19.5 Ks per 9 IP. Last year being his first in the bigs, Hader has a career 107 Ks in 65.2 IP with a K/9 ratio of 14.7.
Hader plain and simple is a monster and has gotten his Yahoo ranking up to 26 overall. However as he doesn't project to be the teams closer once Corey Knebel returns from an early hamstring injury, that doesn't mean by any stretch that his fantasy value will diminish.
Hader as I like to dub this style of relief pitcher is the ultimate eraser guy; meaning he can clean up a messy start from a SP all the while driving down your WHIP and ERA while mopping up Ks. Hader isn't your traditional one and done reliever, and often times stretches out for 1.0 + IP routinely. He will blow past 100 Ks barring he can stay healthy and will continue to pick up occasional saves even when Knebel is back. He will probably start to pick up a few wins as well once he slides into that specialized role and comes in tied up games in the 6th or 7th.
If Hader is available in your league (he shouldn't be) you need to own him now. We have seen this trend of dominant, non-closer relievers, like Andrew Miller who literally can turn around a so-so pitching staff and turn your rotation into a contender. The waiver wire has multiple guys available so if your staff is sucking, seek out a dominant reliever and utilize www.closermonkey.com to stay ahead of the closer carousel.