The series aired on 2 different networks. ABC canceled it after 1 season. It was then picked up by CBS for its second and final season. MTM Enterprises, which produced the series, had a stronger relationship with CBS at the time, which was not unlike ABC's relationship with Paramount Television, which respectively aired and produced Randall's previous series The Odd Couple (1970).
According to Gary David Goldberg in his memoir "Sit, Ubu, Sit", creators Tom Patchett and Jay Tarses did not get along with Tony Randall, nor did they get along with each other, and also refused to take calls from ABC president Fred Silverman. Despite good ratings, Silverman canceled the series due to his unhappiness with their behavior. When the series was picked up by CBS for a second season, Randall returned under the condition that he would not have to work directly with Patchett and Tarses.
According to Tony Randall, ABC offered a second season for 13 shows with an option for 9 more. Grant Tinker asked for the full 22 shows. ABC then offered a second season for 22 shows with an option to drop 9 shows after the first 13!!! CBS offered all 22 shows so they moved to CBS.