here is a link to a brief article that shows the nerves that can be irritated in the sports hernia

its an article on groin pain with some fairly weak graphics for description, yet they are so good since they are very informative. i have mentioned before the entrapment of the ilioinguinal and iliohypogastric nerves, as well as the genital branch of the genitofemoral nerves, and how scar tissue from injuries like the sports hernia can form in the inguinal area and cause nerve pain. these neuromas can form from microtears and can cause chronic pain.
http://www.capitalherniacenter.com/groin_pain.htm