Zeidel was Jewish, and was born in Montreal, Quebec, Canada. His Romanian grandparents were burned to death in Nazi concentration camps. Zeidel played for the Detroit Red Wings and Chicago Black Hawks in the early 1950s, and concluded his career with the Philadelphia Flyers in the late 1960s. In between, he played for numerous teams in the Western Hockey League and the American Hockey League. He played most of his career for the Hershey Bears, a team later affiliated with the National Hockey League’s Washington Capitals but that was independent at the time, located in Hershey, Pennsylvania. In 1959-60, his 293 penalty minutes set an AHL league record. Zeidel won a Stanley Cup in 1952 with the Detroit Red Wings. He won the Calder Cup in 1964 with the Cleveland Barons. Zeidel promoted himself to all 1967 expansion franchises using a self-made promotion kit and resume, subsequently drawing the interest of the Philadelphia Flyers who signed him to a contract at age 39. While playing for the Philadelphia Flyers he was involved in a violent stick-swinging duel with Boston's Eddie Shack, which left both men bleeding. Boston Bruins players yelled at him with anti-Semitic comments throughout the season after the incident. After he retired from hockey, Zeidel worked as a marketing consultant for an investment house. Zeidel died on June 17, 2014, at 86 years of age of complications from congestive heart failure, kidney problems, and dementia. He was diagnosed after death by Boston University researchers who were studying brains of deceased hockey players. A panel of neurologists, neuropsychologists, and researchers reached the clinical consensus diagnoses that he suffered from Chronic Traumatic Encephalopathy, a neurodegenerative disease found in people who have had multiple head injuries. The report concluded that he had likely had more than 100 concussions, and lost consciousness over 10 times. By the time he had retired, he had suffered debilitating headaches, acute temper, odd behavior, and had made uncharacteristically rash financial decisions.
