摘要：The basic aim of this research is to question to what extent the indexes and variables derived directly from the results of individual table tennis games are different in two different seasons of table tennis championships. We have examined a sample of table tennis players competing in various recreational table tennis leagues in SOKAZ (N=914 during 2006 and N=956 during 2007). We found statistically significant differences between individual variables, between the indexes of the table tennis competitor's efficiency and between the "pure statistical" variables, in two different competition seasons. Comparing the differences in variables and indexes that are the indicators for uncertainty of the competition, directions for changing competitive system can be suggested, differently on certain league levels
