16-inch softball (sometimes called "clincher", mushball, cabbageball or blooperball) is a variant of softball, but using a bigger, squishier ball with no gloves or mitts on the fielders. Although it most closely resembles the original game as developed in the 19th century by George Hancock, today it remains popular almost exclusively in Chicago but is also popular in Portland, Oregon, where Mushball has had leagues since the 1960s. The first set of rules were published in 1937 by the Amateur Softball Association, in the same manual as the rules for fastpitch softball.