i'm not a huge fan of OWAR but i kind of actually am. it is very arbitrary but it definitely paints a good picture of who has been productive and who has not. i include the number of AB's because OWAR is a cumulative stat. i also only included players with 150+ ABs.
Perez 2.4 (342)
Gordon 1.9 (343)
Escobar 1.9 (350)
Dyson 1.1 (161)
Cain 1.0 (273)
Infante 0.8 (307)
Moustakas 0.5 (253)
Aoki 0.4 (286)
Hosmer -0.1 (397)
Butler -0.9 (360)
For reference, these are the best and worst OWARs on the team the last few years (at least 300 ABs)
2011:
Gordon 5.1 (611)
Getz 0.4 (380)
2012:
Gordon 3.8 (642)
Francoeur -1.1 (561)
2013:
Hosmer 3.1 (623)
Escobar -0.3 (607)
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Billy

the 2011 offense, my god. do you guys realize the royals had the 7th best SLG and OPS in the MLB that year?