S.C. Code Ann. § 52-5-10: Race horses, entered under assumed names or out of proper class prohibited.

It shall be unlawful for any person knowingly to enter or cause to be entered for competition or to compete for any purse, prize, premium, stake or sweepstake offered or given by an agricultural or other society, association or person or to drive any horse, mare, gelding, colt or filly under an assumed name or out of its proper class, when such prize, purse, premium, stake or sweepstake is to be decided by a contest of speed. Any person found guilty of a violation of this section shall, upon conviction thereof, be imprisoned for a period of not more than one year or fined in any sum not exceeding one thousand dollars.