The term PR means Protected Ranking, whereby an injured player is only ranked for two months of the term of an injury, and the ranking is used over the period in which he returns to play. This ranking is used for tournament entry purposes.
PR is a grading system used for proof coins
never draw back
In a round robin every player in that particular draw plays everyone else in the draw.
play a compass draw
You probably mean "Lawn" tennis. Lawn tennis is simply tennis played on a grass court.
pr in medical terms stands for "per rectum," or a drug inserted into the rectum.
PR stands for Public Relations. If you are referring to a geographical location, it could stand for Puerto Rico.
that you are 100% puerto rican