The home advantage is a phenomenon having evidently a strong impact on results of sports matches. Therefore the ,,home advantage” parameter or component is standardly a part of statistical models describing (and forecasting) sports results. I will concentrate here to the soccer and ice-hockey, in particular the premier leagues in the Czech Republic, however this phenomenon concerns other sports as well. One initiator of this advantage is the presence of home fans. That is why the time of Covid pandemic, when at least one season was played without (or with strong limitation of) spectators, gives a chance to compare the ,,Covid” season with the others and, possibly, to discover a significant decrease of home advantage impact. This paper uses just rather simple statistical tools, nevertheless, with the aid of basic statistical tests the significant changes of home teams results (regarding both the gained points and scored goals) have been detected. The results are also compared with findings of several other studies dealing with the same theme.