The main objective of the university sport in Spain is the comprehensive training of the students. It sets out in the various state regulations in this respect. There is training in values within the comprehensive training that sporting activity should provide through Fair Play. This article aims to describe and evaluate an experience of training in values for the university students carried out by the Sports Department of the University of Cadiz, located in Cádiz, Andalusia, Spain. The methodology consisted of making selected changes to the game rules in football competitions. The experience has lasted ten years. The result of the experience has been very positive, obtaining, among other substantial achievements, a reduction of more than 75% in the percentage of cards (yellow and red) shown during matches and a reduction in referee cautions, a decrease in violent behavior, self-exclusion of players with violent behavior by the teams themselves, and an increase in fair play sporting behavior. Due to this experience, the Sports Department of the University of Cadiz has received numerous national and international awards. However, the leading award has been to take part positively, through sport, in the education and happiness of its students.