5. Lou Piniella
A three-time manager of the year, Piniella was an excellent MLB coach. But it’s impossible to deny that he has a volatile personality. Piniella led the Seattle Mariners for 10 years but also managed several other franchises. He suffered numerous ejections throughout his career because he constantly berated officials.
Piniella unleashed more explosions than North Korea and Iran combined. The manager even brawled with his own players. He famously fought Rob Dibble in one of the wackiest fights ever. Piniella didn’t play Dibble in a win over the Yankees. Dibble denied that he had an injury and Piniella called him a liar. Then, they scrapped in front of the media in a surreal scene.