It seems to me that most Dodger fans believe that the only thing standing between a World Championship Trophy and the LA Dodgers are a couple of relief pitchers. Some say one, some say two, some say three. They often use the example of the 2016 Cubs who went out and got Aroldis Chapman from the Yankees as a two-month rental. The narrative is that Chapman was the missing piece that enabled them to win the Series. That idea is revisionist history.
Chapman helped the Cubs get there, but he was very average against the Dodgers and the Indians in the NLCS and World Series.