WAR may be literally the worst metric to evaluate RPs than any stat for the non elite guys. ERA, Saves, Holds and wins mean more. It also ignores that -1.2 of that comes in his first two seasons in 2013 and 14 before he got injured. I mean, I don't think much of this signing, but if I noted that the Cubs traded for a guy with a career 1.8 rWAR, with 2.4 of that coming in the season prior, I'd be talking about Pedro Strop.