Sports not limited to a specified style, pattern of movement, etc.
noun
a freestyle competition
Swimming a race in which contestants may use any stroke but most use the crawl
a style of wrestling in which any hold or throw is allowed
See freestyle in American Heritage Dictionary 4
noun
a. A swimming event or leg of an event in which the contestants may choose any stroke.
b. The crawl.
A competition, as in figure skating, skiing, or surfing, in which any maneuver or movement is allowed and competitors are judged on their artistic expression, acrobatic skill, and athletic expertise.
A style of wrestling in which all noninjurious holds or tactics are permitted.