Last week, Spurs guard, Manu Ginobili, took a knee to the groin and wound up leaving the game and heading into surgery. He's expected to be off the basketball court for a month.
There's been some speculation about the extent of his injury, and how it compares to other recent testicle injuries. Other athletes have been back in the game much faster.

Parents whose kids participate in sports have been asking for years if Diamond makes groin protection systems in youth sizes. It has always been our goal to make sure we protect as many people as possible but starting a whole new line of youth sizes is no easy undertaking. The good news is that we're about to launch the Diamond Youth Line -with the same exact quality as our current products that are trusted by professional athletes for exceptional protection. 

When a fighter receives a groin shot, it is usually not the pain inflicted on the penis, rather the testicles which brings the fighter to his knees.  The testicles are heavily innervated and when they receive blunt force trauma, a parasympathetic response is triggered which causes a visceral pain and sometimes the feeling of nausea. A severe blow to the groin or likewise to the kidneys or liver can cause blood vessels to dilate and a drop in heart rate.  This decreased blood flow can cause one to pass out.  Inevitably, even if one does not lose consciousness, people lose their ability to stay upright.  Other common symptoms from groin shots are dizziness and higher body temperature.  If there is enough damage, the testicle can rupture or swell so great that it impedes blood flow which leads to a surgical emergency.