The purpose of the present study is to assess the influence of tennis specific endurance training for twelve weeks on speed, agility and maximal oxygen uptake in male tennis players. Twenty (20) male tennis players were selected at random as subjects, who volunteered to participate in this study. All players were classified randomly into two groups tennis specific endurance training group (EG) (n = 10) and control group (CG) (n = 10). These players were selected from National Tennis Academy, SIPCOT, Ranipet, Tamilnadu during the academic year 2018 – 2019. Speed, agility and maximal oxygen uptake were selected as criterion variables. The twelve weeks of tennis specific endurance training were supplemented to EG and CG carried out their regular training. The result of the study revealed that EG from pre to post test showed significant improvement in speed (F (1, 18) = 32.94, p = 0.000), agility (F (1, 18) =32.12, p = 0.000) and maximal oxygen uptake (F (1, 18) = 36.86, p = 0.000) but the CG failed to show significant changes (p> 0.05). It is concluded that twelve weeks of tennis specific endurance training is likely to improve speed, agility and maximal oxygen uptake in tennis players. This study also displayed the effectiveness of 30-15 IFT audio which can also be used for trainingand it is evident in improving the speed, agility and maximal oxygen uptake in tennis players.