[1] He was a 1954 graduate of the Wharton School of Business, University of Pennsylvania and served two years in the United States Air Force.
Otto was the sixth member of his family to serve as the Merchant's chief executive.
[2] Frenzel, along with Wren Blair and Al Savill, was briefly co-owner, secretary, and treasurer of the NHL's Pittsburgh Penguins.
[4][5] Upon becoming owner of the Penguins, he dissolved the farm system to save money and was forced to trade draft picks to keep the team marginally competitive.
[6] Savill and Frenzel remained co-owners of the team for two seasons, eventually selling the team was sold to local shopping mall developer Edward J. DeBartolo Sr. in February 1977.