| 2015 pre-season: | NW selects Carlos CONTRERAS with the 2015 NW#6 draft choice |
| 2015 cutdown: | NW drops David AARDSMA, Abraham ALMONTE, John BAKER, Alexi CASILLA, Carlos CONTRERAS, Jake GOEBBERT, Ryan LUDWICK, Tyler LYONS, Nate McLOUTH, Joe ORTIZ, Placido POLANCO, Aaron POREDA and Omar QUINTANILLA |
| 2015 waiver: | CAY picks up Carlos CONTRERAS from waivers and drops Jemile WEEKS |
| 2015 mid-season: | CAY drops Carlos CONTRERAS |
| 2016 pre-season: | DET selects Carlos CONTRERAS with the 2016 GC#7 draft choice |
| 2016 cutdown: | DET drops Chad BILLINGSLEY, Carlos CONTRERAS, Christian FRIEDRICH, Tom GORZELANNY, Phil KLEIN, Pete KOZMA, Hector NOESI, James RUSSELL, Donovan SOLANO, Rafael SORIANO, Eric STULTS and Ryan SWEENEY |
| 2016 waiver: | ZIO picks up Carlos CONTRERAS and Matt SZCZUR from waivers and drops Sam FULD and Jarrod PARKER |
| 2017 cutdown: | ZIO drops Dan ALTAVILLA, Carlos CONTRERAS, Jake ELMORE, Aaron HILL, Steve JOHNSON, Mat LATOS, Dixon MACHADO, Clint ROBINSON, Hyun-Jin RYU, Grady SIZEMORE and Aaron THOMPSON |