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When Ned Colletti brought Manny Ramirez in, he was praised by Dodger fans, but by the time Ramirez left the feeling was not the same. The three-way deal between the Red Sox, Pirates and Dodgers that brought Ramirez to Hollywood was a huge blockbuster deal that also sent Adam LaRoche to Pittsburgh, Jason Bay to Boston, and Ramirez to LA.
Ramirez' first year with the Dodgers was great. He put up 121 RBIs and 37 home runs, and was fourth in NL MVP voting. Dodger fans started to say welcome to "MannyWood." This success did not last long when in 2009, Ramirez was caught using a banned substance and suspended 50 games.
Later on his name was said to be on the anti-doping commission's list of major leaguers who had used performance enhancing drugs. In a sense, it was like Colletti hadn't done his homework, and now the Dodgers were suffering as a result. Unable to replace the bat of Ramirez, the Dodgers faltered.
Ramirez had several stints on the DL, and upon his return he argued with an umpire and was ejected. He never wore Dodger blue again, and was put on the waiver wire. In the end, this is probably the worst deal Colletti ever made. Sure, it was a great deal in the short-term, but long-term, it caused a lack of success, and ended with Ramirez going on the waiver wire.
If you're going to lose a star player, you'd might as well trade him so you get something in return, but Colletti allowed him to walk. Manny Ramirez could very well be the best and worst deal Ned Colletti has ever made as the GM of the LA Dodgers.