In a league I was playing, Dario Unda became a big star, having 4 seasons in a row for the Yankees where he was hitting ~.300/.450 OBP/50 HR/120+ RBIs. I, playing as GM of the Red Sox, made a huge move to sign him as a free agent, with a ridiculous $30M per season over 7 years, not noticing that he was a locker room cancer.
In Unda's first season he played extremely well, but completely cratered the chemistry of the team and we had our first sub-.500 team in several years. Traded him to a desperate St. Louis team in the off-season, replaced him with a 2.0 WAR player, and promptly made the World Series.
He was the New Age Barry Bonds
