The Colorado Rockies combination of Chris Iannetta, Tony Wolters, Tom Murphy, and Drew Butera were both lackluster at the plate and (with the exception of Wolters) defensively in 2018.
In general, the Rockies struggled offensively in 2018 and the team has already said that they plan on improving it this offseason.
One player that they can acquire to help that out is JT Realmuto of the Miami Marlins. We discussed the possibility of him on the market and the Rockies potentially acquiring Realmuto in this article last week.