Jacoby Ellsbury used to be one of the best players in baseball. He led his league in stolen bases three times and finished second in MVP voting (2011) as a member of the Red Sox.
The Yankees signed him to a seven-year, $153 million contract after he posted a 5.7 bWAR season with the Red Sox in their World Series-winning year of 2013.
Oh, man, what a mistake. Ellsbury posted a couple of decent seasons, but nothing near what the Yankees wanted nor was it worth that level of money.