I know it is trivial, but at least Rojas was in the .600s not the .500s at the end of the season.  
I remember a few people saying that if he could have a .650 OPS with his defense he was worth it.  Came up short, but in the ballpark at least.  2 WAR?   A little less?
(Baseball reference has him at 0.7, his defense didn’t play as well this year, which we all noticed early in the year)