A month ago the Tampa Bay Rays traded for stellar defensive shortstop Adeiny Hechavarria. He has already saved the team a handful of runs with his highlight real defensive plays. Also his hitting has been a huge contribution is some games which was not expected.
He is currently hitting .267 but a lot of those hits came a clutch times and helped win some games. The main reason the Rays traded for him was to have a sure-handed shortstop that will not make many errors.
For position players the only other piece needed was a left handed bat to help with depth.