Each round you will score your opponent´s sportsmanship out of 7. Sportsmanship is NOT a measure of how good a game you had - but how pleasant (or not) your opponent made the experience. Just because you lose 7-0 doesn´t mean you should award a 1, and winning 4-3 in the last turn does not mean you should give a 7 either.
Scores over 4 are deliberately open to subjective interpretation. In the event of a 1 or 2 a judge may ask for some justification of the score.