In November 2014, the Diamondbacks signed Cuban baseball player Yasmany Tomas to a 6 year contract for $68.5 million. He had never started in more than 81 games in a season.
The Diamondbacks were convinced that Tomas could hit. They didn’t know if he could play defense. Experiments at third base failed. Then they put him on first base. The season ended with him in the outfield. In 118 games he batted .273 with 9 home runs.
2016 produced his best results. He spent his time moving from left to right field. He hit 31 home runs, batted .272 and had 83 RBIs. That ended his production for the Diamondbacks. The next season he had core surgery. He only played 47 games batting .241 with 8 home runs. The next season, he spent the whole year in AAA and never played a major League game. In 2019, he only played 4 games in the majors. Finally The Diamondbacks released him. Although he was signed by the Nationals, he still has not played another major League game.
The final result is the Diamondbacks paid $68.5 million. Tomas had one season when he hit 31 home runs. Other than that season, he has spent all his time in the minor leagues or disabled.