ureteropelvic junction obstruction, renal trauma, football injury, Nigeria Ureteropelvic junction (UPJ) obstruction is the most common form of Congenital Anomaly of the Kidney and Urinary Tract UPJ and may remain asymptomatic in some cases with eventuation in end stage renal disease later in life. In this case report, we discuss the incidental finding of progressive, asymptomatic bilateral ureteropelvic junction obstruction and deranged serum creatinine in a 24 years old male who developed severe left loin pain and haematuria following a blunt force traumatic injury during a football game. It is advised that sports students should undergo renal/urogenital systems evaluation and all close-range football shots to the abdomen and blows to the abdomen or lower back should be thoroughly investigated among other recommendations.