This study investigated testosterone and cortisol levels on mood states among university male basketball players who had been preparing themselves for the intervarsity competition 2023-2024. The researcher selected 24 players from the University of the Punjab, Lahore, and Government College University Lahore n=12 each, aged between 19 to 25 years. Psychological states were evaluated using the Profile of Mood States(POMS) after matches, while aerobic fitness was assessed using the Cooper Test, which correlates with testosterone levels and POMS parameters. The results revealed that the winners had a considerably higher level of testosterone, while cortisol levels were diminished. Winners further showed improved POMS scores that indicated better mood states and high VO2 max levels, an indication of better aerobic fitness. Results indicated that high testosterone levels are the cause of high vigor and enhanced psychological resilience and that low cortisol levels reflect a decrease in stress and anxiety after the competition.