Mendoza Line

Mendoza Line - Wikipedia:
"The term is named for former shortstop Mario Mendoza, who actually hit .198 in the 1979 season.

George Brett is believed to have coined the phrase when asked about his batting average.[1] When shown his average in a newspaper, Brett was said to have made a remark along of the lines of, 'I knew I was off to a bad start when I saw my average listed below the Mendoza line.' However, Brett was only behind Mario Mendoza in batting average for one day in the 1979 season, and Bruce Bochy, Tom Paciorek and Robby Wyper have also been credited as creators of the expression."