The illegality of prostitution. Another blessing of civilization from the American Christian majority.... 
"Authorities said Sapp faces a maximum penalty of $2,500 in fines, six months in jail, three years' probation and mandatory 15 days in jail if convicted on the prostitution charge."
--- The assault charge is the main problem. Sounds like he has a history of hitting women. The judge will make sure that he learns his lesson this time.
--- it would've been 15 days in jail for just the prostitution charge. No biggie.