Janak, O; Paces, J; Zhanel, J; ,
Analysis of the course of a match serves as a feedback tool in many sports (e.g. football, basketball, volleyball, tennis), the results of which are subsequently used in the training process. In tennis, the most common method is analysis of the game characteristics, which is being used before the match as well as during the post-match analysis. Curently a specialized computer software is being used which replaces previously used manual analysis methods. The advantage of using the software is less time-consuming, immediate data processing and gaining results. Analysis results of game characteristics from major tennis tournaments are commonly available online in electronic form, even several years back. When selecting the analyzed game characteristics, we used the IBM Slam Tracker software which is used in all Grand Slam tournaments. We analysed the game characteristics of the participants of World Junior Tennis Finals (WJTF) in 2014 in Prostejov. The aim of this study, based on the research data analysis, was find out the differences in the level of 13 chosen game characteristics of the winners and defeated junior finalists (n=4) and also to verify whether there are significant differences bethween the junior and adult players' results at Roland Garros 2014. From the recorded video of the final matches of Canada (CA) and Germany (DE), the game characteristics were analyzed using the Dartfish 9.0 software. The results of the WJTF 2014 finalists' analysis showed that in the first match (NK vs. FA) the winning FA tennis player presented himself with the more aggressive concept of the game. Player FA scored 3 aces, 17 winners (16 of which were from forehand) and 11 successful actions on the net. The equilibrium of the opponents shows a small difference in the total number of points gained (NK 88; FA 96). In the second match (RM vs. NM players), the defeated NM player made a total of 7 doubles, his success rate of first serve was only 56 %, also the NM player also scored 18 unforced errors, and gained only 26 points (comparing to 55 points of the winner). While in the first match a total of 184 points were scored, only 81 points were scored in the second match, which is indicating the unequivocal course of the second match.The comparison of the game characteristics of the two junior finals showed that the difference between the winners and defeated players was mainly the number of aces, points scored after first and second serves and total number of points scored. Based on a comparison of the level of game characteristics of Junior (WJTF) and adult finalists (Roland Garros) in 2014, it can be noted that adult players have been able to benefit more from their first serve and also gain more points after the second serve of their rival than juniors. Also, breaking the opponent's serve was more important factor and in this case the decisive one.