Mohd Kassim, S.F., Suwarganda, E., Mohd Nor, E. (2015). Successful tactics in Taekwondo during Sukan Malaysia 2012. J. Hum. Sport Exerc., 9(Proc2), pp.S723-S730. Introduction: The aim of the present study was to analyse the tactics performed by winner and non-winner during Sukan Malaysia (SUKMA) 2012. At present, scientific information and notational analysis on tactical aspects by Malaysia's taekwondo youth is non-existent. Methods: Sixty two male taekwondo athletes were included in this study. Video recording was taken of 55 matches from quarter final to final involving four weight categories (<58kg, 58-68kg, 68-80kg and >80kg). Notational analysis for all matches was done using SportsCode Pro 8.5.2. The variables coded were tactics (attack and defence), techniques, target area and point result. The total number of attempts and successful attempts were counted per category for winner and non-winner. Chi-square statistical method was used to compare the total number of successful attempts between winner and non-winner for each tactic. Results: The Chi-square result shows no significant difference between winners and non-winners for tactics used across all weight categories and matches for total successful attempts (x2=4.00, df=3, p<0.05), for successful attacks (x2=5.50, df=3, p<0.05) and for successful defence (x2=1.97, df=3, p<0.05). Winners have 343 total (attack and defence) successful attempts, out of that 192 for attacking and 151 for defending. Non-winner received 172 total (attack and defence) successful attempts with 116 for attacking and 56 for defending. Winners however, have higher percentage of successfulness in attack and defence compared to non-winners. From 2187 total attempts, winners' successfulness is 9% for attack and 7% for defence. Non-winners have 2352 total attempts, achieving 5% successfulness for attack and 2% for defence. Discussion & Conclusion: The result shows no differences in tactics for both winner and non-winner. Even though non-winners attempt more than winners (total: 2352 vs 2187, attacking attempt: 1749 vs 1391 and defensive attempt: 603 vs 796), winners have higher successfulness in attacking and defensive tactics. Possibly, winners have a qualitative difference that could explain the higher percentage of successfulness in attacking and defensive tactics compared to non-winners. Further investigation should be done in the sequence and quality of attempts to understand more about successfulness of attempts in Malaysian taekwondo youth.