The purpose of this study examines the effect of Selangor weightlifters concerns over the performance of the National Weightlifting Championship in Johor Bahru 2015. The sample is Selangor weightlifting athletes aged 13 to 15 years who participated in the national weightlifting championship in Johor Bahru. Data were collected through questionnaires Competitive State Anxiety Inventory (CSAI-2) to measure the level of anxiety (cognitive, somatic, self-confidence). The mean value analysis, the percentage used to determine the level of concern for athletes. Correlation tests were used to examine the association between the phases of concern with the performance of athletes during the competition. The results showed the level of anxiety (cognitive, somatic and self-confidence) athletes a day before the tournament is at a moderate level. Other while, cognitive anxiety level significantly correlated with performance or achievement during the tournament. Therefore, the coaches and athletes must continue to concentrate on the concerns of cognitive intentions to achieve excellent performance in a weightlifting tournament in the future. Researchers suggest the management should seek the help of a sports psychologist to provide psychological training for athletes particularly to address the concerns of cognitive as well as physical exercise by periods of sustained exercise.