13. Darryl Strawberry vs. Keith Hernandez
1986 was a terrific year for the New York Mets as they won the World Series. However, behind closed doors, all was not well. Strawberry and Hernandez both had chips on their shoulder. In sum, Strawberry believed he was the most important player for the team, and his rivalry with Hernandez increased.

Things got worse over the next three years. In 1989, Strawberry had a tantrum because he wanted to sit near his friends during a team photoshoot. Hernandez went on to call Strawberry a “crybaby” because of both how he handled that situation and a contract dispute.