The purpose of the study was to investigate and Isometric exercise on cricket playing ability. The criterion measure selected for cricket playing abilities were batting, bowling and fielding performances. The subjects were 90 male school and college cricket player of Jodhpur. The age of the player ranged from 16 to 22 years. All the subjects and training treatments were assigned to the groups using random group design. The two experimental groups participated in the training for a period of Eight weeks. The first group (A) performed Isotonic exercises, the second group (B) performed Isotonic exercises and the third group (C) Which was not allowed to do any exercise served as the control group. All the three groups, however, kept participating in the school & college/ University physical education programme. Each subjects of all the experimental groups and control groups were tested at the beginning and at the conclusion of an experimental period of eight week to obtain pre-test and post-test scores. Training was carried out thrice a week on Mondays, Wednesdays, and Fridays. The analysis of covariance for batting, bowling and fielding skills indicated the resultant F-ratio in the case of pre-test means and post-test means were significant. The difference between the adjusted final means for groups was however, significant. The critical difference for adjusted means revealed that the mean gain made by all experimental groups showed statistically significant difference between experimental group and control group in bating and bowling performance. In fielding performance the critical differences for adjusted means showed that the mean gain made by experimental groups showed statistically significant difference among experimental group and control group.