GamedayB-Ref Preview Cubs wOBA wRC RS Rockies wOBA wRC RS Starlin Castro .332 .52 -.03 Dexter Fowler .347 .58 -.03 Darwin Barney .293 .36 .03 Jonathan Herrera .298 .38 .02 Marlon Byrd .338 .52 -.01 Carlos Gonzalez .381 .67 .00…