Magnum, P.I. (1980)

After the attempted murder of a former Naval Academy buddy, care-free quarterback Dorsey Bramlett, Thomas agrees to join the professional American Football team that Bramlett is now on in training, in order to be close at hand and protect his pal should another attempt be made on his life. The would-be killer is determined and persistent, but that's nothing compared to the strenuous poundings Thomas has to endure during training...