<Li> The Baseball or Grenade . Thrown as in the backhand, but with the disc upside - down . This shot is used often to get up and down on a short shot where there is danger of a shot rolling away or going out of bounds if thrown too far . Primarily used on downhill shots but can be used to go up and over . Also due to the quick turn and backspin of this shot, it is sometimes used to get out of the woods . </Li> <Li> The Overhand wristflip (or chicken - wing (ambiguous origin)). This is a very difficult and stylized throw with which accomplished free - stylers and classic ultimate players are familiar; it is less used in disc golf . It is thrown in the same manner the "baseball" but drawn on the sidearm side of the body, and by inverting the arm and disc . Using the thumb as the power finger, the disc is drawn from the thigh area rearwards and up from behind the body to over the shoulder, releasing toward a forward aimpoint . The disc flies in a conventional flight pattern . To the untrained eye, this appears to be an ungainly throw . It is, however, elegant and accurate . The term "overhand wristflip" has been in use since at least circa 1970 . </Li> <P> Stroke Play is the most common scoring method used in the sport but there are many other forms . These include match play, skins, speed golf and captain's choice, which in disc golf is referred to as "doubles" (not to be confused with partner or team play). </P> <P> Regardless of which form of play the participants choose, the main objectives of disc golf are conceptually the same as traditional golf in the sense that players follow the same scorekeeping technique . </P>

When was the first set of rules written for disc golf