['Stretching prior to activity or as a rehabilitative intervention may promote increased throwing shoulder range of motion (ROM) in baseball pitchers.', 'To evaluate the acute effects of Fauls modified passive stretching routine on throwing shoulder mobility in collegiate baseball players.', 'Repeated measures.', 'Laboratory.', 'Thirty collegiate baseball players with unimpaired shoulders.', 'Fauls modified passive stretching routine was performed on the throwing shoulder of each subject.', "Shoulder complex and passive isolated glenohumeral internal and external rotation ROM were measured with a goniometer, and posterior shoulder tightness was assessed with the Tyler's test method using a carpenter's square. Measurements were made bilaterally.", 'The dominant shoulder displayed significant increases in glenohumeral and shoulder complex internal and external rotation ROM and significantly decreased posterior shoulder tightness following the stretching routine.'] Does fauls stretching routine produce acute gains in throwing shoulder mobility in collegiate baseball players?