There are three main types of positions in the ground grappling game: Pins, Holds, and Transitions. Transitions Transitions, or transitional positions, are positions that offer a slight advantage to the practitioner. Typically, these are more difficult to keep than Pins or Holds. Also, submission opportunities are more severely limited. Nomenclature Half guard - note: the half guard is its own beast, more to come. Side port / starboard - you had a side pin, but the opponent rolled onto his side, either facing you or away. Turtle - opponent is curled into a ball on all fours. Sprawl - opponent shot, you sprawled, now he is turtled up. Submissions With the exception of half guard, all of these Transitions offer opportunities to catch one's opponent in a submission hold. Most notably, all of these positions offer an opportunity for juji gatame. Here are some other opportunities: Side port - ude garami Side starboard - hadaka jime Turtle - waki gatame, ushiro sankaku j...