A "bad call" is an informal term used in sports to describe a referee decision, or "call", that is incorrect or perceived to be incorrect. Bad calls have been associated with all sports involving referees or judges.[1][2]
A bad call is made by a game referee when:
Public outcry following a highly visible and questionable call might lead to a public clarification of existing rules or in rare instances, an actual change in rules.
Author Andrew Caruso notes that "Bad calls or bad breaks are part of every sport. That's life."[3]
"Bad call" is used outside of sports colloquially to quickly label a bad decision: "His promotion was a bad call.", "He took her to dinner with his mom; bad call."